The document provides examples of breaking down multiplication problems into easier steps by thinking of numbers as sums of other numbers and multiplying the parts. It works through problems like 67x53 by treating them as (60+7)x(50+3) and multiplying and adding the results. Similarly with other problems like 10x20 and 30x70, breaking them into parts to multiply and then add the partial results. The document encourages trying another problem on your own and provides the answer to check the work.

2. Calculate 50 X 60 6 7 X 5 3 Calculate 50 X 7 3,000 350 180 21 Calculate 3 X 60 Calculate 3 X 7 Add the results 3,551 To find 67 x 53, think of 67 as 60 + 7 and 53 as 50 + 3. Then multiply each part of one sum by each part of the other, and add the results +

3. Calculate 10 X 20 1 4 X 2 3 Calculate 20 X 4 200 80 30 12 Calculate 3 X 10 Calculate 3 X 4 Add the results 322 Let’s try another one. +

4. Calculate 30 X 70 3 8 X 7 9 Calculate 70 X 8 2, 100 560 270 72 Calculate 9 X 30 Calculate 9 X 8 Add the results Do this one on your own. 3002 Let’s see if you’re right. +