Multiplication, Division

Front

What is multiplication?

Back

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

Front

What is division?

Back

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

Front

How do you check a division problem using multiplication?

Back

You can check a division problem by multiplying the quotient (result of division) by the divisor. If the product equals the dividend, the division is correct.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If a × b = c, then c ÷ b = a and c ÷ a = b.

Front

Estimate the product of 25 × 40.

Back

The estimated product is 1,000, as 25 is close to 30 and 40 is close to 40, so 30 × 40 = 1,200.

Front

If you have 48 candies and want to share them equally among 6 friends, how many candies does each friend get?

Back

Each friend gets 8 candies, as 48 ÷ 6 = 8.

Front

What is the formula to find the total cost when buying multiple items?

Back

Total Cost = Number of Items × Cost per Item.

Front

If a box contains 24 items and you have 5 boxes, how many items do you have in total?

Back

You have 120 items, as 24 × 5 = 120.

Front

What is the best estimate for 47 × 6?

Back

The best estimate is 300, as 50 × 6 = 300.

Front

How do you find the number of groups in a division problem?

Back

To find the number of groups, divide the total amount by the size of each group.