Fluently adding and subtracting numbers between 20 and 100

What is addition?

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

• Addition is the process of dividing a number into equal parts.

• Addition is the process of subtracting one number from another.

• Addition is the process of multiplying two or more numbers.

What is subtraction?

• Subtraction is the process of finding the difference between two numbers by taking one number away from another.

• Subtraction is the process of adding two numbers together to get a sum.

• Subtraction is the process of multiplying two numbers to get a product.

• Subtraction is the process of dividing one number by another to get a quotient.

What is the result of 90 - 45?

• 30

• 45

• 60

• 50

If you have 80 candies and you give away 30, how many do you have left?

• 30

• 50

• 60

• 70

81 + 17 = ?

• 95

• 96

• 98

• 99

27 + 18 = ?

• 43

• 44

• 45

• 46

What is the sum of 30 and 20?

• 40

• 50

• 60

• 70

What is the estimated difference of 90 and 55?

• 25

• 30

• 35

• 40

If you have 40 apples and you buy 15 more, how many apples do you have?

• 50

• 55

• 60

• 45

What is 100 - 60?

• 30

• 40

• 50

• 20