3rd- Unit 3: Relating Multiplication to Division

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 x 4 means adding 3 four times (3 + 3 + 3 + 3).

Front

What is division?

Back

Division is a mathematical operation where a number is split into equal parts. For example, 12 ÷ 3 means splitting 12 into 3 equal parts, which equals 4.

Front

How are multiplication and division related?

Back

Multiplication and division are inverse operations. This means that if you know one, you can find the other. For example, if 4 x 3 = 12, then 12 ÷ 3 = 4.

Front

What does it mean to find the 'unknown' in an equation?

Back

Finding the 'unknown' means solving for a number that makes the equation true. For example, in 6 x ? = 42, the unknown is the number that, when multiplied by 6, equals 42.

Front

If Sydney has 42 seeds and plants them in 6 rows, how many seeds are in each row?

Back

42 ÷ 6 = 7. Sydney can plant 7 seeds in each row.

Front

What is the equation to find out how many seeds Sydney plants in each row?

Back

The equation is 42 = 6 x ?.

Front

How can you compare two groups using multiplication?

Back

You can compare two groups by calculating the total for each group using multiplication and then comparing the totals.

Front

If Beth has 8 tables with 2 rulers each, how many rulers does she have?

Back

Beth has 8 x 2 = 16 rulers.

Front

If Micah has 2 tables with 8 rulers each, how many rulers does he have?

Back

Micah has 2 x 8 = 16 rulers.

Front

How do you determine who has more in a comparison problem?

Back

You calculate the total for each person and compare the results. The one with the higher total has more.