6.5 PROBLEM SOLVING • Use Multiplication

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

How do you find the total number of items when you know the number of groups and items in each group?

Back

To find the total number of items, multiply the number of groups by the number of items in each group. For example, if there are 4 groups with 3 items each, the total is 4 x 3 = 12.

Front

What is a fraction?

Back

A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number). For example, 1/4 means one part out of four equal parts.

Front

How do you divide a whole number by a fraction?

Back

To divide a whole number by a fraction, multiply the whole number by the reciprocal of the fraction. For example, to divide 9 by 1/2, calculate 9 x 2/1 = 18.

Front

What is the reciprocal of a fraction?

Back

The reciprocal of a fraction is obtained by flipping the numerator and denominator. For example, the reciprocal of 3/4 is 4/3.

Front

If each pot holds 1/4 pound of soil, how many pots can be filled with 8 pounds of soil?

Back

To find the number of pots, divide the total weight of soil by the weight each pot holds: 8 ÷ (1/4) = 8 x 4 = 32 pots.

Front

How many 1/4-size pieces are in 3 whole cakes?

Back

To find the number of 1/4-size pieces in 3 cakes, multiply the number of cakes by the number of pieces each cake can be cut into: 3 x 4 = 12 pieces.

Front

What is the total length of ribbons if one is 3 feet and the other is 8 feet?

Back

The total length is 3 + 8 = 11 feet.

Front

How many 1/4 foot pieces can be cut from 11 feet of ribbon?

Back

To find the number of pieces, divide the total length by the length of each piece: 11 ÷ (1/4) = 11 x 4 = 44 pieces.

Front

What is the process to cut a yard of fabric into thirds?

Back

To cut a yard of fabric into thirds, divide the total length (1 yard) by 3. Each piece will be 1/3 yard long.