Multiplication strategies

Multiplication strategies

by Abir Sait

​What other facts can be found?

• 7 x 4 = 28 (half of 8 is 4 so half the answer)​

• ​double 7 or 4 -> 14 x 8 = 112 or 7x 16 = 112

• ​multiples of 10:

• ​70 x 8 = 560 7 x 80 = 560 70 x 80 = 5600

​Using multiples of 10 when involving near multiples

• ​Find 7 x 81

• ​7 x 80 = 560 -> so 7 x 81 = 560+7 = 567

Fill in the Blanks

Find 7 x 79 if 7 x 80 = 560

Fill in the Blanks

I know 7 x 13 = 91

What is 14 x 13 ?