Next, using our multiplication table as a reference, we see what each of those parts times 39 equals and then add the products. ![]() For example, for the same problem as before, 22 times 39, we can break 22 into 10, 5, 5, and 2 (10+5+5+2=22). ![]() Finally, you add those products to find your answer. Next, we break down the other number into smaller, simpler parts, and then, using the multiplication table as a reference, find out what those parts times the first number equal. Below is an image of how to solve the problem 22 times 39 using the partial products method:įor multiplication, the ratio tables method involves creating a multiplication table for one of the numbers being multiplied. Next, we multiply the parts of 22 (2 and 20) by the parts of 39 (9 and 30), and add the products together to find our answer. For example, if we take the problem 22 times 39, we break 22 into its parts, 2 and 20, and we break 39 into its parts, 9 and 30. We used partial products, ratio tables, and area models to solve more complex multiplication and division problems.įor multiplication, partial products involves stacking the two numbers being multiplied, breaking them up based on place values, multiplying the parts, and then adding the products of the multiplied parts. This week we covered different ways of solving multiplication and division problems.
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