Multiply by 1-digit Numbers

Front

What is multiplication?

Back

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

Front

What is the product of a number and 1?

Back

The product of any number and 1 is the number itself. For example, 7 x 1 = 7.

Front

How do you multiply a 1-digit number by a 2-digit number?

Back

Multiply the 1-digit number by each digit of the 2-digit number, starting from the right. For example, to calculate 3 x 12, do 3 x 2 = 6 and 3 x 1 = 3, giving you 36.

Front

What is the total cost of 2 items priced at $259 each?

Back

$518 (2 x 259 = 518).

Front

What is the product of 121 and 8?

Back

968 (121 x 8 = 968).

Front

How can you find the total production of 2,354 hammers in 3 hours?

Back

Use the expression (3 x 2,000) + (3 x 300) + (3 x 50) + (3 x 4).

Front

What is the best estimate for the cost of 8 bags of buttons at $47 each?

Back

$400 (8 x 50 = 400, as 50 is a rounded estimate of 47).

Front

How do you find the total weight of 4 dogs weighing 84 pounds each?

Back

Multiply the weight of one dog by the number of dogs: 4 x 84 = 336 pounds.

Front

What is an example of a multiplication problem?

Back

An example is 5 x 6, which equals 30.

Front

What does it mean to estimate in multiplication?

Back

Estimating means rounding numbers to make multiplication easier. For example, estimating 47 as 50 makes calculations simpler.