Add/Sub/Rounding Unit 1 Review

Pamela saved $374 to buy a new couch. Round her savings to the nearest TEN.

• 300

• 400

• 370

• 380

Which statement is true?

• 415 rounded to the nearest 100 is 450.

• 739 rounded to the nearest 10 is 740.

• 739 rounded to the nearest 100 is 700.

• 415 rounded to the nearest 10 is 400.

When a number was rounded to the nearest 100, it became 800.

Which of these could be the original number?

• 750

• 850

• 899

• 712

403 - 171 = _______

• 574

• 372

• 232

• 270

AJ was given the clue 23 - 5 = 18 to help her solve a problem. What related problem could she have been trying to solve?

• 18 + ___ = 23

• 23 + ____ = 28

• 18 - ___ = 3

• 18 + ___ = 5

My teacher had 600 pennies in her collection.

She gave 10 pennies each to 9 students, and keeps the remaining pennies for the future.

What is the best estimate of the number of pennies she kept for herself?

• 500

• 600

• 650

• 790

Mrs. Thompson went to the farmers market/ She bought 32 vegetables for the week, 25 pieces of fruit, and some chocolate (C). If she bought 83 pieces of food at the market, how many pieces of chocolate did she buy?

What equation would you use to answer this question?

• 32 + 25 + 83 = C

• 32 + 25 + C = 83

• 32 + C - 25 = 83

• 32 - 25 - 83 = C

Jax has 257 baseball cards in his collection. He gave 19 to his friend for his birthday. His mom thought that was sweet, so she bought him 40 new ones for Christmas. How many cards does he have now?

• 238

• 278

• 240

• 297

Look at the pattern:

3, 7, 11, 15, ____

What could be the rule?

• add 3

• subtract 4

• add 4

• subtract 3

If this pattern continues, what would be the next three numbers?

12, 18, 24, 30, ________

• 32, 34, 36

• 36, 40 , 50

• 31, 32, 33

• 36, 42, 48