Vocabulary
Addition
Subtraction
100

An answer close to the exact answer.

Estimate

100

312+478 = 

790

100

148-101= 

47

200

When you subtract 2 from 7, the _______________ is 5. 

Difference 

200

69+54

123

200

Round to the nearest hundred to estimate the difference:       2,187-1,549=

700

300

The sum of any number and 0 is that number. This is the _______________ Property.

Identity 

300

3,350 +1,209=

4,559

300

99,500-53,967

45,533

400

8+9 = 9+8   this is an example of the ______________ property. 

Commutative 

400

Round to the nearest thousand to estimate the sum:     2,378+6,709= 

9,000

400

112,672-69,370

43,302

500

4+(3+1) = 1+(4+3)    is an example of the _________ Property 

Associative

500

24,153+2,310

26,463

500

Billy has 567 glass marbles. He has 267 plastic marbles. He gave 132 plastic marbles to his brother. how many total marbles does Ford have? 

702

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