Topic 2 Review

Pretty Properties

100

The general name for rules we use in addition (Hint: check out the category title)

Addition Properties

200

3+0=3

This is an example of which property?

A) Commutative

B) Associative

C) Identity

C) Identity

300

7+6=6+7

This is an example of which property?

A) Commutative

B) Associative

C) Identity

A) Commutative

400

(2+7)+8=2+(7+8)

This is an example of which property?

Associative

500

Solve this addition problem using the associative property:

4+(15+9)+(7+3)=10+?

28

I'll See You aROUND-ing

100

Rounding in math means:

A) Finding about how much

B) Rolling clay into a ball

C) Adding numbers together

A) Finding about how much

200

Round this number to the nearest 10.

27

30

300

Round this number to the nearest 100.

246

200

400

Round this number to the nearest 10.

783

780

500

Round this number to the nearest 100.

1,562

1,600

Estimation Nation

100

When you estimate you find:

A) an exact answer 

B) about how much

C) the hidden treasure

B) about how much

200

Estimate the sum by rounding each number to the nearest 10.

76+12

80+10=90

300

Estimate the sum by rounding each addend to the nearest 100.

152+483

200+500=700

400

Ms. Blom baked 3 dozen cookies for her math students. Estimate how many cookies she baked by rounding your answer to the nearest 10.

40

500

There are 18 students in scuba diving lessons. Estimate how many flippers the instructors will need to teach the class. Round your answer to the nearest 10.

40

I want sums!

100

Use the break apart strategy to solve

43+15

58

200

Use the break apart strategy to solve

66+25

91

300

Use the picture proof strategy to solve

37+49

86

400

Use the picture proof strategy to solve

68+77

145

500

Use the picture proof strategy to solve

146+98

244