Topic 8 Review Game

Which numbers in the correct order that make this equation true?

7 + (9 + ______) = (7 + _______) + 2

• 7 and 9

• 2 and 9

• 9 and 9

• 2 and 7

A honey bee makes 103 pounds of honey in one month. Another honey bee can make 179 pounds of honey in one month. Choose all of the equations that show a reasonable estimate for how much honey they make together.

• 105 + 180 = 285

• 100 + 50 = 150

• 100 + 180 = 280

• 100 + 200 = 200

• 120 + 150 = 270

Estimate the difference of 735 and 414

• about 200

• about 300

• about 400

• about 500

Choose the equation that is true

• 80 + 130 = 130 + 80

• 0 + 110 = 0

• 45 + (89 + 25) = 89 + 70

• (89 + 10) + 27 = 90 + (10 + 27)

Choose the equation that is true

• 78 + 80 = 80 + 80

• 90 + 0 = 0

• 0 + 78 = 78

• (114 + 10) + 60 = 114 + (20 + 60)

Choose the estimate that is rounded to the nearest hundred

628

• 630

• 600

• 625

• 700

Choose the estimate that is rounded to the nearest hundred

283

• 280

• 200

• 300

• 285

Round this number to the nearest ten

439

• 400

• 500

• 435

• 440

Round this number to the nearest ten

473

• 475

• 470

• 500

• 460

Miss Cardoso subtracts 328 from 782 and gets 454. What addition equation can he use to check his answer?

• 782 - 328 = 454

• 454 + 328 = 782

• 454 + 782 = 1,236

• 500 + 330 = 830