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Define
Rounding Numbers
+ in Place Value
- in Place Value
Word Problems
100

What is a addend? 

A number you add.

100
Round 790 to the nearest 100

800

100

300 + 42 = 

342

100

89 - 9 = 

80

100

What is the value of 3 in the number below?


836

The value is 30 

Because it is in the tens place. 

200

What is the sum?

The answer to an addition problem. 

200

Round 76 to the nearest 10 

80

200

800 + 100 =

900

200

143 - 43 =

100

200

How much is it value? 

2 quarters, 1 dime, 3 pennies?

63 cents 

300

What is the identity property of addition?

Any number plus zero is still the original number. 


678 + 0 = 678


300

Round 532 to the nearest 100

500

300

251 + 89 = 

340

300

748 - 583 = 

165

300

There 5 boys and 5 girls in Mr. Allen's class. What is the fraction? 

5                          1

____          or     _____             

5                           2

400

What is the commutative property of addition? 


The switcheroo property. 

You can add numbers in any order and still get the same sum.

1 + 2 = 3 

or 

2 + 1 = 3

400

Round 88 to the nearest 10

90

400

512 + 450 = 

962

400

379 - 299 = 

80 

400
On Sunday, there 150 bike riders in the park. Then, on Monday there were 65 bike riders at the park. How many total bike riders were at the park on both Sunday and Monday? 

215 bike riders

500

What is the associative property of addition? 

When three or more numbers are added, any two or more can be grouped together and you will get the same sum (answer). 

(3 + 7) + 9 = 3 + (7 + 9 )

The same numbers grouped together in a different order, you still get the same sum. 

500

Round 555 to the nearest 100

600

500

1, 550 + 1, 230 = 

2, 780

500

1,732 - 651 =

1,081

500

There were 215 jewels sparkling in a cave. Of the jewels, 63 were amethysts and 152 were diamonds. How many more diamonds than amethysts were sparkling in the cave?

89 diamonds