Envision Grade 3 Topic 8 Review

Properties

100

18+__=18

Fill in the blank. What property is shown?

A. Communitive Property of Addition

B. Associative Property of Addition

C. Identity Property of Addition

18+0=18

C. Identity Property of Addition

200

14+(16+15)=(__+16)+15

Fill in the blank. What property is shown?

A. Communitive Property of Addition

B. Associative Property of Addition

C. Identity Property of Addition

14

B. Associative Property of Addition

300

___+13=13+17

Fill in the blank. What property is shown?

A. Communitive Property of Addition

B. Associative Property of Addition

C. Identity Property of Addition

17

A. Communitive Property of Addition

400

28+(__+22)=28+(22+25)

Fill in the blank. What property is shown?

A. Communitive Property of Addition

B. Associative Property of Addition

C. Identity Property of Addition

25

A. Communitive Property of Addition

500

62+21+0=62+__

Fill in the blank. What property is shown?

A. Communitive Property of Addition

B. Associative Property of Addition

C. Identity Property of Addition

21

C. Identity Property of Addition

Metal Math

100

302+56

358

200

463+418=

881

300

222+725=

947

400

523-165=

360

500

282-125=

157

Rounding

100

Round 374 to the nearest ten and the nearest hundred.

Nearest 10: 370

Nearest 100: 400

200

Round 848 to the nearest ten and the nearest hundred.

Nearest Ten: 850

Nearest Hundred: 800

300

Mark’s family traveled 565 miles. Rounded to the nearest ten, about how many miles did they travel?

560 miles

400

Sara collected 345 shells. Rounded to the nearest hundred, about how many shells did she collect?

300 shells

500

The Leaning Tower of Pisa in Italy has 294 steps. 

To the nearest ten, about how many steps are there?

To the nearest hundred, about how many steps are there?

Nearest Ten: 290

Nearest Hundred: 300

Estimating Differences

100

Round to the nearest hundred.

527-341

200

200

Round to the nearest hundred.

872-184=

700

300

Round to the nearest ten.

387-298=

90

400

Round to the nearest ten.

659-271=

390

500

Will rounding to the nearest ten or the nearest hundred give a closer estimate of 848-231? Explain your answer

Nearest ten.

850-230=620

800-200=600

The actual difference is 617

Estimating Sums

100

Round to the nearest hundred.

367 + 319

700

200

Round to the nearest hundred.

737 + 127

800

300

Round to the nearest ten.

298 + 542

840

400

Round to the nearest ten.

459 + 85

550

500

Will rounding to the nearest ten or the nearest hundred give a closer estimate of 314 + 247? Explain your answer.

The nearest ten.

Nearest ten: 310+250=560

Nearest hundred: 300+200=500

Actual answer: 561