Multiplying by tens

Front

What is the result of multiplying 30 by 40?

Back

1200 or 1,200

Front

What is the result of multiplying 90 by 90?

Back

8100 or 8,100

Front

What is the result of multiplying 90 by 60?

Back

5400

Front

What is the result of multiplying 50 by 7?

Back

350

Front

What is the result of multiplying 70 by 90?

Back

6300 or 6,300

Front

What is the general rule for multiplying numbers by 10, 100, or 1000?

Back

When multiplying by 10, 100, or 1000, you can add the corresponding number of zeros to the end of the other number.

Front

How do you multiply two numbers that are both multiples of 10?

Back

Multiply the non-zero digits and then add the total number of zeros from both numbers to the result.

Front

What is the product of 4 and 20?

Back

80

Front

What is the product of 6 and 30?

Back

180

Front

How can you simplify the multiplication of 50 by 6?

Back

You can calculate 50 x 6 as (5 x 6) x 10 = 30 x 10 = 300.