Adding and Subtracting 10 and 100

Front

What is adding 10 to a number?

Back

When you add 10 to a number, you increase that number by ten. For example, 5 + 10 = 15.

Front

What is subtracting 10 from a number?

Back

When you subtract 10 from a number, you decrease that number by ten. For example, 15 - 10 = 5.

Front

What is adding 100 to a number?

Back

When you add 100 to a number, you increase that number by one hundred. For example, 200 + 100 = 300.

Front

What is subtracting 100 from a number?

Back

When you subtract 100 from a number, you decrease that number by one hundred. For example, 300 - 100 = 200.

Front

What is ten more than 50?

Back

60

Front

What is ten less than 80?

Back

70

Front

What is 100 more than 400?

Back

500

Front

What is 100 less than 600?

Back

500

Front

If you have 30 and you add 10, what do you have?

Back

40

Front

If you have 90 and you subtract 10, what do you have?

Back

80