3.2 Addition and Subtraction Place Value

The Orlando Magic team scored 41 points before half-time and scored 7 more points after half-time. Choose the model that shows the teams total score.

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The farm has 24 brown cows and 30 spotted cows. How many cows are on the farm together?

• 6 tens and 5 ones

• 7 tens and 2 ones

• 5 tens and 4 ones

• 24 tens and 32 ones

How can you solve 38 + 10?

• 3 + 8 + 1 + 5

• 30 + 8 + 4

• 31 + 13

• 30 + 10 + 8

Find the sum of the base ten blocks below. Draw how you grouped the blocks on the tens and ones chart to explain your thinking.

• 18

• 45

• 48

• 54

Eli has a fish tank with 36 blue fish and 10 red fish. He used the model below to find the total number of fish in his tank.

• Eli added 7 ones to 36

• Eli added 1 one to 37

• Eli added 1 one to 36

• Eli added 7 ones to 31

What is 10 more than 24?

• 14

• 34

• 24

• 25

What is 10 less than 89?

• 89

• 99

• 69

• 79

Cara had 50 pencils at home. She brings 20 of them to school. How many pencils did Cara leave at home?

• 50 - 20 = 30

• 2 tens + 5 tens = 7 tens

• 5 - 2 = 3

• 5 tens -2 tens = 25 tens

Mrs. Smith got a big bag of gummy bears from her class. The bag has a total of 80 gummy bears. Mrs. Smith ate 10 gummy bears during snack time. How many gummy bears does Mrs. Smith have now?

• 7

• 9

• 70

• 81

Show another way of finding the sum of 48 + 2?

• 40 + 10

• 6 + 8

• 4 + 8 + 2

• 40 + 2