Khan Academy Class 2 (NCERT) Math Videos and Exercises

Math Videos:

Numbers from 1 to 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers

Number grid
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:counting-numbers-to-100/v/number-grid

Intro to place value
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:place-value/v/place-value-introduction

Place value example: 25
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:place-value/v/place-value-example

Place value example: 42
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:place-value/v/rep-quantity-with-digits

Greater than and less than symbols
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:comparing-2-digit-numbers/v/greater-than-and-less-than-symbols

Addition and subtraction without regrouping

https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping

Adding 1 vs. adding 10
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-1s-and-10s/v/comparing-adding-1-and-10

Understanding place value when adding ones
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-1s-and-10s/v/understanding-place-value-when-adding-ones

Understanding place value when adding tens
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-1s-and-10s/v/understanding-place-value-while-adding-tens

Subtracting 1 vs. subtracting 10
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:subtracting-1s-and-10s/v/comparing-subtracting-1-and-10

Subtracting 1s using place value
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:subtracting-1s-and-10s/v/understanding-place-value-while-subtracting-ones

Subtracting 10s using place value
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:subtracting-1s-and-10s/v/understanding-place-value-when-subtracting-tens

Adding 2-digit numbers without regrouping 1
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-without-regrouping/v/adding-two-digit-numbers-no-regrouping

Breaking apart 2-digit addition problems
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-without-regrouping/v/breaking-apart-two-digit-addition-problems

Subtracting two-digit numbers without regrouping
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:subtraction-without-regrouping/v/subtracting-two-digit-numbers-without-regrouping

Addition and subtraction with number lines
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:addition-and-subtraction-using-number-line/v/correct-number-lines-for-addition-and-subtraction

Adding and subtracting on number line word problems
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:addition-and-subtraction-using-number-line/v/adding-and-subtracting-on-number-line-word-problems

Addition and subtraction with regrouping
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping

Regrouping to add 1-digit number
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:adding-with-regrouping/v/regrouping-when-adding-two-digit-and-one-digit-number

Adding by making a group of 10
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:adding-with-regrouping/v/adding-by-getting-to-group-of-10-first

Adding 53+17 by making a group of 10
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:adding-with-regrouping/v/addition-using-groups-of-10-intro

Subtracting with regrouping (borrowing)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:subtracting-with-regrouping/v/introduction-to-regrouping-borrowing

Missing numbers in addition and subtraction
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:addition-and-subtraction-mixed-problems/v/missing-numbers-in-addition-and-subtraction-within-100

Addition word problem: horses
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:word-problems-within-100/v/fence-posts-for-horses

Subtraction word problem: tennis balls
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:word-problems-within-100/v/losing-tennis-balls

Subtraction word problem: snow
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:word-problems-within-100/v/snow-on-friday

Subtraction word problem: crayons
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:word-problems-within-100/v/using-crayons

Addition word problem: starfish
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:fewer-and-more-word-problems/v/starfish-rulers

Subtraction word problem: basketball
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:fewer-and-more-word-problems/v/fewer-word-problems

Geometry and measurement
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement

Comparing lengths
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:length/v/comparing-lengths

Estimating lengths
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:length/v/estimating-lengths

Understanding mass (grams and kilograms)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:mass/v/intuition-for-grams

Understanding volume (liters)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:volume/v/liter-intuition

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

Numbers from 1 to 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers

Missing numbers
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:counting-numbers-to-100/e/count-from-any-number

Numbers to 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:counting-numbers-to-100/e/count-to-100

Groups of ten objects
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:place-value/e/groups-of-tens

Tens and ones
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:place-value/e/tens-and-ones

2-digit place value challenge
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:place-value/e/understanding-2-digit-numbers

Compare 2-digit numbers
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:comparing-2-digit-numbers/e/comparing_whole_numbers

Compare 2-digit numbers 2
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd: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-2nd-math-cbse/x41ed04e12bec59cd:adding-2-digit-numbers/x41ed04e12bec59cd:comparing-2-digit-numbers/t/x41ed04e12bec59cd:adding-2-digit-numbers-unit-test

Addition and subtraction without regrouping
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping

Add 1 or 10
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-1s-and-10s/e/add-within-100--level-1

Add 1s or 10s (no regrouping)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-1s-and-10s/e/adding-1s-or-10s-to-two-digit-numbers

Subtract 1 or 10
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:subtracting-1s-and-10s/e/subtract-with-in-100-level-1

Subtracting 1s or 10s (no regrouping)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:subtracting-1s-and-10s/e/subtracting-1s-or-10s

Adding up to four 2-digit numbers
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-without-regrouping/e/add-within-100--level-2

Break apart 2-digit addition problems
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:adding-without-regrouping/e/breaking-apart-two-digit-addition-problems

Add within 100 using a number line
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:addition-and-subtraction-using-number-line/e/add-sub-within-100-w-num-line

Subtract within 100 using a number line
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:addition-and-subtraction-using-number-line/e/subtract-within-100-level-2

Add and subtract on the number line word problems
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:addition-and-subtraction-using-number-line/e/adding-and-subtracting-on-the-number-line-word-problems

Unit test on Addition and subtraction without regrouping
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping/x41ed04e12bec59cd:addition-and-subtraction-using-number-line/t/x41ed04e12bec59cd:addition-and-subtraction-without-regrouping-unit-test

Addition and subtraction with regrouping
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping

Regroup when adding 1-digit numbers
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:adding-with-regrouping/e/regroup-two-digit-plus-one-digit

Add 2-digit numbers by making tens
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:adding-with-regrouping/e/making-100

Add within 100 using place value blocks
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:adding-with-regrouping/e/addition_3

Subtract within 100 using place value blocks
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:subtracting-with-regrouping/e/subtraction_3

Find the missing number (add and subtract within 100)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:addition-and-subtraction-mixed-problems/e/find-the-missing-number-add-sub-within-100

Addition word problems within 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:word-problems-within-100/e/addition-and-subtraction-word-problems-within-100--level-1

Subtraction word problems within 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:word-problems-within-100/e/addition-and-subtraction-word-problems-within-100--level-2

2-step addition word problems within 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:fewer-and-more-word-problems/e/addition-and-subtraction-word-problems-within-100--level-3

2-step subtraction word problems within 100
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:fewer-and-more-word-problems/e/addition-and-subtraction-word-problems-within-100--level-4

Unit test on Addition and subtraction with regrouping
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping/x41ed04e12bec59cd:fewer-and-more-word-problems/t/x41ed04e12bec59cd:addition-and-subtraction-with-regrouping-unit-test

Geometry and measurement
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement

Estimate lengths
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:length/e/estimating-lengths

Estimate mass (grams and kilograms)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:mass/e/estimating-mass

Estimate volume (milliliters and liters)
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:volume/e/estimating-volume

Unit test on Geometry and measurement
https://www.khanacademy.org/math/in-in-class-2nd-math-cbse/x41ed04e12bec59cd:geometry-and-measurement/x41ed04e12bec59cd:volume/t/x41ed04e12bec59cd:geometry-and-measurement-unit-test