Multiplying with Zeros

Front

What is the result of multiplying any number by zero?

Back

The result is always zero.

Front

What is the result of multiplying a number by 10?

Back

The result is the number followed by one zero.

Front

How do you multiply a number by 100?

Back

You take the number and add two zeros to the end.

Front

What is the product of 4 and 400?

Back

1,600.

Front

If you multiply a number by 50, what is the same as multiplying it by?

Back

Multiplying by 50 is the same as multiplying by 100 and then dividing by 2.

Front

What is the missing number in the equation ____ x 800 = 2,400?

Back

3.

Front

What is 7 multiplied by 70?

Back

490.

Front

If 2 x ____ = 800, what is the missing number?

Back

400.

Front

What is the general rule for multiplying numbers with zeros?

Back

Count the total number of zeros in the factors and add them to the product of the non-zero digits.

Front

How does multiplying by 5 relate to multiplying by 10?

Back

Multiplying by 5 is half of multiplying by 10.