Vocabulary
Addition
Estimation
Properties of Addition
Column Addition
100
Addicting numbers in your mind without using pencil and paper or a calculator.

What is mental math?

100

Solve:

34 + 13

What is 47?

100

Round the addends to the nearest 10 and estimate the sum.

39 + 47

What is 90?

100

What addition strategy is shown below?

8 + 8=16

What is doubles?

100

Solve: 

    3

    2

+  2

What is 7?

200

A number sentence with an equals sign.

What is an equation?

200

Solve:

204 + 135

What is 339?

200

Round the addends to the nearest hundred and estimate the sum.

129 + 285

What is 400?

200
The property of addition that says 12 + 0 = 12

What is zero property of addition?

200

Solve:

    84 + 69 + 56

What is 209?

300

A set of related addition and subtraction facts. 

What is a fact family?
300

Solve: 

277 + 135

What is 412?

300

Round the addends to the nearest hundred and estimate the sum.

678 + 204

What is 900?

300

Name the addition strategy shown below:

8 + 2 + 5 = 10 + 5= 15

What is make a ten?

300

solve:

18 + 64 + 52

What is 134?

400

A number sentence with an equals sign.

What is an equation?

400

Solve: 

2, 466 + 356

What is 2, 822

400

Solve.

The students in 3rd grade lost 24 pencils on Monday.  They lost 17 pencils on Tuesday.  About how many books did they read in all?  Solve by estimation. 

What is 40?

400

The property of addition that says 7 + 8 = 15 and 8 + 7 = 15

What is the order property of addition?

400

Solve:

213 + 537 + 628

What is 1, 378?

500

A graph that uses pictures or symbols to show data.

What is a pictograph?

500

Solve: 

4, 679 + 3, 450

What is 8, 129?

500

In one week, the students read 139 fiction books and 189 nonfiction books.  Estimate the number of books read altogether.

What is 328?

500

Switching the order of addends does not change the sum.  For example: 7 + 5 + 2 = 14 and 7 + 2 + 5 = 14.

What is the Grouping Property of Addition?

500

Solve: 

The rabbits that Jeremy raises are sold to pet shops.  Last year Jeremy sold 43 rabbits to Friendly Pets, 21 rabbits to Happy Pet Shop, and 18 rabbits to Gentle Pets.  How many rabbits did Jeremy sell last year?

What is 82 rabbits?

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