Khan Academy Class 1 Math (NCERT) Videos and Exercises

Math Videos:

Numbers from 1 to 9
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9

Counting with small numbers
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:counting/v/counting-with-small-numbers

Counting in order
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:counting/v/counting-in-order

Comparing numbers of objects
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:comparing-small-numbers/v/comparing-groups-through-10-example

Counting by category
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:comparing-small-numbers/v/count-by-category

Intro to addition
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:what-is-addition/v/addition-introduction

Making 5
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-221/v/making-5

Getting to 10 by filling boxes
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-225/v/getting-to-10-by-filling-boxes

Adding to 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-225/v/adding-to-10-example

Intro to subtraction
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:what-is-subtraction/v/subtraction-introduction

Add and subtract: pieces of fruit
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:subtract-within-10/v/adding-fruit

Addition and subtraction within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:subtract-within-10/v/addition-and-subtraction-within-10

Relating addition and subtraction
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:relate-addition-and-subtraction/v/relating-addition-and-subtraction

Addition word problems within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:addition-and-subtraction-word-problems/v/addition-word-problems-within-10

Subtraction word problems within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:addition-and-subtraction-word-problems/v/subtraction-word-problems-within-10

Numbers from 10 to 20
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20

Teens as sums with 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-numbers-from-1-to-20/v/teens-and-ten

Teen numbers: monkeys
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-numbers-from-1-to-20/v/monkeys-for-party

Intro to place value
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-numbers-from-1-to-20/v/place-value-introduction

Counting in pictures
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/v/counting-in-scenes

Counting objects 1
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/v/how-many-objects-1

Counting objects 2
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/v/counting-objects-2

Adding 7 + 6
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:addition-within-20/v/adding-within-20

Adding 8 + 7
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:addition-within-20/v/adding-within-20-example

Adding 5 + 3 + 6
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:addition-within-20/v/adding-3-numbers

Subtracting 14 - 6
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:subtraction-within-20/v/subtracting-within-20

Equal sign
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:equal-sign/v/equal-sign

Repeated addition: haircuts
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:repeated-addition/v/repeated-addition-example

Addition and subtraction word problems: superheroes<
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-within-20/v/sea-monsters-and-superheroes

Addition and subtraction word problems: gorillas
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-within-20/v/exercising-gorillas

Comparison word problems: marbles
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-with-more-and-fewer/v/comparison-word-problems

Comparison word problems: roly-polies
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-with-more-and-fewer/v/more-comparison-word-problems

Numbers from 1 to 100
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100

Number grid
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:counting-numbers-to-100/v/number-grid

Counting by tens
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:counting-by-tens/v/counting-by-tens-example-problems

Intro to place value
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:place-value/v/place-value-introduction

Place value example: 25
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:place-value/v/place-value-example

Place value example: 42
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:place-value/v/rep-quantity-with-digits

Greater than and less than symbols
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:comparing-2-digit-numbers/v/greater-than-and-less-than-symbols

Geometry and measurement
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement

Relative position
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:shapes-and-space/v/relative-position

Ordering by length
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:length-and-size/v/order-by-length

..............................................
Math Exercises:

Numbers from 1 to 9
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9

Count with small numbers
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:counting/e/counting-out-1-20-objects

Count in order
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:counting/e/counting-objects

Compare numbers of objects 1
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:comparing-small-numbers/e/compare-groups-through-10

Comparing numbers to 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:comparing-small-numbers/e/comparing-numbers-through-10

Compare numbers of objects 2
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:comparing-small-numbers/e/sort-groups-by-count

Add within 5
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:what-is-addition/e/addition_1

Making 5
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-221/e/making-five

Making small numbers in different ways
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-221/e/making-totals-in-different-ways-within-10

Make 10 (grids and number bonds)
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-225/e/making-ten

Make 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:untitled-225/e/making-ten-2

Subtract within 5
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:what-is-subtraction/e/subtraction_1

Add within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:subtract-within-10/e/put-together

Subtract within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:subtract-within-10/e/take-apart

Relate addition and subtraction
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:relate-addition-and-subtraction/e/relate-addition-and-subtraction

Addition word problems within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:addition-and-subtraction-word-problems/e/addition-word-problems-within-10

Subtraction word problems within 10
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:addition-and-subtraction-word-problems/e/subtraction-word-problems-within-10

Unit test on Numbers from 1 to 9
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-9/xdedfdde82b722757:addition-and-subtraction-word-problems/t/xdedfdde82b722757:numbers-from-1-to-9-unit-test

Numbers from 10 to 20
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20

Teen numbers
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-numbers-from-1-to-20/e/teen-numbers-1

Find 1 more or 1 less than a number
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/e/one-more--one-less

Count in pictures
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/e/counting-in-scenes

Count objects 1
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/e/how-many-objects-1

Count objects 2
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:counting-objects/e/how-many-objects-2

Add within 20
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:addition-within-20/e/addition_2

Add 3 numbers
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:addition-within-20/e/adding-three-numbers

Subtract within 20
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:subtraction-within-20/e/subtraction_2

Equal sign
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:equal-sign/e/meaning-of-equal-sign-1

Find missing number (add and subtract within 20)
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:missing-numbers-within-20/e/missing-number-within-20--add-and-subtract-

Adding with arrays
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:repeated-addition/e/repeated-addition

Addition and subtraction word problems 1
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-within-20/e/addition-and-subtraction-word-problems-within-20--level-1

Addition and subtraction word problems 2
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-within-20/e/addition-and-subtraction-word-problems-within-20--level-2

Add and subtract within 20 word problems
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-with-more-and-fewer/e/addition-and-subtraction-word-problems-within-20--level-3

Word problems with "more" and "fewer" 2
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-with-more-and-fewer/e/addition-and-subtraction-word-problems-within-20--level-4

Unit test on Numbers from 10 to 20
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-10-to-20/xdedfdde82b722757:word-problems-with-more-and-fewer/t/xdedfdde82b722757:numbers-from-10-to-20-unit-test

Numbers from 1 to 100
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100

Missing numbers
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:counting-numbers-to-100/e/count-from-any-number

Numbers to 100
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:counting-numbers-to-100/e/count-to-100

Count tens
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:counting-by-tens/e/counting-tens

Groups of ten objects
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:place-value/e/groups-of-tens

Tens and ones
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:place-value/e/tens-and-ones

2-digit place value challenge
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:place-value/e/understanding-2-digit-numbers

Compare 2-digit numbers
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:comparing-2-digit-numbers/e/comparing_whole_numbers

Compare 2-digit numbers 2
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:comparing-2-digit-numbers/e/comparing-two-digit-numbers-1

Unit test on Numbers from 1 to 100
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:numbers-from-1-to-100/xdedfdde82b722757:comparing-2-digit-numbers/t/xdedfdde82b722757:numbers-from-1-to-100-unit-test

Geometry and measurement
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement

Relative position
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:shapes-and-space/e/relative-position

Compare size
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:length-and-size/e/which-has-more-

Order by length
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:length-and-size/e/order-by-length

Indirect measurement
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:length-and-size/e/indirect-measurement

Unit test on Geometry and measurement
https://www.khanacademy.org/math/in-in-class-1st-math-cbse/xdedfdde82b722757:geometry-and-measurement/xdedfdde82b722757:length-and-size/t/xdedfdde82b722757:geometry-and-measurement-unit-test