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In this worksheet you will learn to round numbers to the nearest ten to estimate the answer to a multiplication.

 

Example

Estimate the answer by rounding the numbers to the nearest 10 before multiplying.

 

78 x 43
A
 x 
B
 = 
C


Answer

 

78 x 43
80
 x 
40
 = 
3200

 

Remember, to work out 80 x 40, we work out 8 x 4 x 10 x 10 = 32 x 100 = 3200

10 questions