Multiply Multi-Digit Numbers by Multiples of 10

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).

Front

What does it mean to multiply by a multiple of 10?

Back

Multiplying by a multiple of 10 means multiplying a number by 10, 20, 30, etc. This often makes calculations easier because you can shift the decimal point to the right.

Front

What is the product of 720 x 20?

Back

The product of 720 x 20 is 14,400.

Front

How can you break down the multiplication of 720 x 20?

Back

You can break it down as (720 x 2) x 10, which equals 1,440 x 10 = 14,400.

Front

What is 220 x 30?

Back

220 x 30 = 6,600.

Front

How do you calculate the cost of multiple items?

Back

To calculate the cost of multiple items, multiply the price of one item by the number of items. For example, if a T-shirt costs $10 and you buy 150, the total cost is $10 x 150 = $1,500.

Front

What is 50 x 600?

Back

50 x 600 = 30,000.

Front

What is the equation for 33 tens x 4 hundreds?

Back

33 tens x 4 hundreds = 132,000.

Front

What is the value of 45 ones x 20 tens?

Back

45 ones x 20 tens = 900.

Front

What is the value of 150 ones x 3 tens?

Back

150 ones x 3 tens = 4,500.