Multiplication and Division by Rebecca Wingard-Nelson

Author:Rebecca Wingard-Nelson [Wingard -Nelson, Rebecca]
Language: eng
Format: epub
ISBN: 978-1-4645-0456-3
Publisher: Enslow Publishers, Inc.
Published: 2012-03-14T16:00:00+00:00

Step 2: Multiply the whole numbers.

18 × 40 = 720

The product of 181/3 and 393/4 is about 720.

The exact answer to this problem is 728 3/4.

720 is a good estimate.

12

Division

Definition

dividend: The number that you are dividing in a division problem.

divisor: The number you are dividing by in a division problem.

quotient: The answer to a division problem.

How Many Groups?

Division lets you take an amount and separate it into equal smaller groups. Division can find the number of smaller groups or the size of each group.

How many groups of 4 coins can you make from 12 coins?

Step 1: One way to look at division is that it is repeated subtraction. How many times can you subtract 4 from 12? Start with 12, and subtract 4 at a time.

12 ‒ 4 = 8

8 ‒ 4 = 4

4 ‒ 4 = 0

You can make 3 groups of 4 coins each from 12 coins.

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