Vocabulary
Rounding
Addition
Subtraction
Word Problems
100

How much a digit is worth based on it's place.

What is value?

100

27 rounded to the nearest 10.

What is 30?

100

76+89=

What is 165?

100

88-29=

What is 59?

100

Ms. Bates baked 283 cookies on Friday.  On Saturday she baked 187 cookies.  How many more cookies did she bake on Friday than on Saturday?

What are 96 more cookies on Friday?

200

The answer in an addition problem.

What is the sum?

200

124 rounded to the nearest 10.

What is 120?

200

127+183=

What is 310?

200

189-178=

What is 11?

200

Najat says that 367 + 429 is about 1,000.  Do you agree or disagree?

I disagree because the sum is closer to 800.

300

The answer in a subtraction problem.

What is the difference?

300

1,325 rounded to the nearest 10.

What is 1,330?

300

Estimate the answer for 258+387

What is 650?

300

600-241=

What is 359?

300

Which two numbers have a sum closest to 1,000?

327         482           600           398

What are 600 and 398?

400

The property that states you can flip the addends around in an addition problem.

What is the Commutative Property?

400

2,344 rounded to the nearest 100.

What is 2,300?

400

127+320=125+____

What is 322?

400

625 - 48 = 630 -___

What is 53?

400

The fourth grade has 363 students.  Over winter break, 94 students moved away, but 26 new students moved in.  How many fourth graders are there now?

What are 295 fourth graders?

500

This word is similar to estimating. It gives us the approximate value of a number. For example, 73 is about 70.

What is rounding?

500

12,478 rounded to the nearest hundred.

What is 12,500?

500

327+_____=42+641

What is 356?

500

___ - 270 = 727 - 268

What is 729?

500

Yusuf and Khadro collect cans to recycle.  Yusuf has 275 cans and Khadro has 168 cans.  On their way to the recycling center, their bag breaks and 89 cans fall out.  How many cans do they have now?

What are 354 cans?

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