Round Off and Estimation

Round off to the nearest ten: 762

• 700

• 760

• 800

• 770

Round off to the nearest hundred: 567

• 500

• 560

• 600

• 570

Round off to the nearest ten: 1 567

• 1570

• 1600

• 1560

• 1500

Round off to the nearest hundred: 1 847

• 1800

• 1900

• 1850

• 1840

Estimate: 49

• 40

• 50

• 45

• 55

Estimate: 342

• 300

• 350

• 400

• 450

Estimate: 1 982

• 1 000

• 1 500

• 2 000

• 2 500

Estimate Addition: 28 + 21

• 30 + 20 = 50

• 20 + 20 = 40

• 30 + 30 = 60

• 20 + 30 = 50

Estimate Addition: 623 + 150

• 700 + 100 = 800

• 600 + 100 = 700

• 700 + 200 = 900

• 600 + 200 = 800

Estimate Addition: 2 347 + 3 890

• 4 000

• 5 000

• 6 000

• 7 000