Using the tip, what is the correct answer to the given calculation?Hint: To multiply a number by another number which is a multiple of 10 and whose only non zero digit is the leading digit 1: move the digits to the left by the same number of zeros that are in the multiple of 10. Note: whole numbers that do not have decimal parts are written without a d.p. e.g. 200.0 = 200: in such cases the d.p. is not normally needed.34.56 × 100 = ?

The key to multiplying or dividing difficult numbers is simplification. Example: Multiply 14 by 17 - To solve, simplify it: 14 x 17 = (14 x 10) + (14 x 7) = 140 + 98 = 238 More tips: To multiply by 11, first multiply by 10, then add the original number To multiply by 9, first multiply by 10, then subtract the original number To divide by 5, first multiply by 2 and then move the digits to the right To divide by 25, divide by 100, then multiply by 4   Related Tests: 11 Plus (11+) Maths Practice Test: Multiplication and Division (Very Easy) 11 Plus (11+) Maths Practice Test:... Show more

The key to multiplying or dividing difficult numbers is simplification.

Example: Multiply 14 by 17 - To solve, simplify it: 14 x 17 = (14 x 10) + (14 x 7) = 140 + 98 = 238

More tips:

To multiply by 11, first multiply by 10, then add the original number

To multiply by 9, first multiply by 10, then subtract the original number

To divide by 5, first multiply by 2 and then move the digits to the right

To divide by 25, divide by 100, then multiply by 4

 

Related Tests:

11 Plus (11+) Maths Practice Test: Multiplication and Division (Very Easy)

11 Plus (11+) Maths Practice Test: Multiplication and Division (Easy) 

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