Problem Solving(Multiplication and Division)

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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) which equals 12.

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What is division?

Back

Division is a mathematical operation that represents the process of splitting a number into equal parts. For example, 12 divided by 3 (12 ÷ 3) means splitting 12 into 3 equal parts, which equals 4.

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How do you find the total number of items in rows and columns?

Back

To find the total number of items in rows and columns, multiply the number of rows by the number of items in each row. For example, if there are 5 rows with 4 items each, the total is 5 x 4 = 20.

Front

What is the formula for finding the number of items per group?

Back

To find the number of items per group, divide the total number of items by the number of groups. For example, if there are 20 items and 4 groups, then 20 ÷ 4 = 5 items per group.

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If a shirt costs $14, how do you find the total cost for multiple shirts?

Back

To find the total cost for multiple shirts, multiply the cost of one shirt by the number of shirts. For example, if one shirt costs $14 and you buy 3 shirts, the total cost is 14 x 3 = $42.

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What does it mean to divide evenly?

Back

Dividing evenly means that when you divide a number, there are no remainders. For example, 10 ÷ 2 = 5 is even, but 10 ÷ 3 = 3 with a remainder of 1 is not even.

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How can you check your multiplication answer?

Back

You can check your multiplication answer by using division. If you multiplied 4 x 5 = 20, you can check by dividing 20 ÷ 5 = 4.

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What is a word problem in math?

Back

A word problem is a mathematical question presented in a narrative form, requiring you to extract the numbers and operations needed to solve it.

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How do you solve a word problem involving multiplication?

Back

To solve a word problem involving multiplication, identify the quantities involved, determine what is being asked, and then multiply the relevant numbers.

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What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. This means that if you know the product of two numbers, you can find one of the numbers by dividing the product by the other number.