Add or Subtract Within 100 Using Strategies

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What does it mean to add within 100?

Back

Adding within 100 means finding the sum of numbers that are less than 100.

Front

What does it mean to subtract within 100?

Back

Subtracting within 100 means taking away a number from another number that is less than 100.

Front

If you have 20 apples and you add 30 more, how many apples do you have?

Back

20 + 30 = 50 apples.

Front

If you have 50 candies and you eat 15, how many candies are left?

Back

50 - 15 = 35 candies left.

Front

What is the sum of 12 and 4?

Back

12 + 4 = 16.

Front

What is the difference between 39 and 20?

Back

39 - 20 = 19.

Front

Crystal has 25 lollipops. If Angie has 12 more, how many do they have together?

Back

25 + 37 = 37 lollipops.

Front

What is 45 + 45?

Back

45 + 45 = 90.