Multiply by 9

Front

What is the result of multiplying any number by 0?

Back

The result is always 0.

Front

What is 9 multiplied by 1?

Back

9.

Front

What is the product of 9 and 6?

Back

54.

Front

What is the product of 9 and 4?

Back

36.

Front

What is 9 multiplied by 10?

Back

90.

Front

What pattern do you notice when multiplying 9 by numbers 1 through 10?

Back

The tens digit increases by 1 for each increase in the multiplier, while the units digit decreases by 9.

Front

How can you quickly multiply a number by 9 using your fingers?

Back

Hold out both hands, and for the number you are multiplying by 9, fold down that finger. The fingers to the left of the folded finger represent the tens, and the fingers to the right represent the units.

Front

What is the general rule for multiplying any number by 9?

Back

Multiply the number by 10 and then subtract the original number from the result.

Front

What is 9 multiplied by 5?

Back

45.

Front

If you multiply 9 by a number greater than 10, what can you expect the result to be?

Back

The result will be greater than 90, as 9 multiplied by 10 is 90.