Multiplication StrategiesUse Tens
Created 3 years ago
Duration 0:02:27
11
Explanation of how to use the strategy of Use Tens for x5 and x10 multiplication facts

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Multiplication Facts

Slide 1  Multiplication Strategies—Use Tens
 for x5 and x10
 When multiplying by 10, shift the other factor one place value to the left and put a 0 in the ones place
 For x5 facts, start with the x10 fact and then take half
 for 4 x 10 think
 H T O
 4
 4 0 so 4 x 10 = 40
 for 16 x 10 think
 1 6
 1 6 0 so 16 x 10 = 160
 for 5 x 7 think
 7 x 10 = 70
 half of 70 is 35
 So 5 x 7 = 35
 for 5 x 9 think
 9 x 10 = 90
 half of 90 is 45
 So 5 x 9 = 45