Unit 1 Math Review

Rounding

100

Round to the nearest tenth: 11

10

200

Round to the nearest hundredth: 495

500

300

Round to the nearest hundredth: 6,659

6,700

400

Round to the nearest ten thousandth: 456,999

460,000

500

Round to the nearest tenth: 232,699

232,700

Addition

100

52+9=

61

200

432+99=

531

300

569+43=

612

400

999+9=

1,008

500

523+987=

1,510

Subtraction

100

10-7=

3

200

14-9=

5

300

25-7=

18

400

135-66=

69

500

539-99=

440

Metric Conversions

100

7,000 g = ? kg

7kg

200

500cm = ? m

5m

300

5 L 632 mL = ? mL

5,632 mL

400

4 km 523 m - 10m = ? m

4,513 m

500

6 L 432 mL - 689 mL = ? mL

5,743 mL

Tape Diagrams

100

Dominic has 14 donkeys and 2 lobsters. How many animals does Dominic have. 

16 animals 

200

Mrs. Osborne has 42 pets. She has 17 dogs, 14 cats, and some chickens. How many chickens does she have? 

11 chickens 

300

Mr. Cohen has a hot tub that is 5,320 liters full. He added 4,232 liters of water. How much water is now in his hot tub? 

9,552 L

400

Gabe built a toy tower that measured 1m 78cm. After building some more, he measured it, and it was 82 cm taller. How tall is his tower now? 

1,160 cm

500

Brian is 1 meter 87 centimeters tall. Bonnie is 58 centimeters shorter than Brian. Betina is 26 centimeters taller than Bonnie. How tall is Betina? 

1,055 cm