Rounding and Estimation

Estimation is...

• making a number simpler

• Using what you know to find a value that is close enough to the right answer

• A good guess

• Picking a number on the number line

What is 235 rounded to the nearest 100?

• 250

• 300

• 200

• 100

What is 560 rounded to the nearest 100?

• 500

• 560

• 600

• 400

What is 739 rounded to the nearest 10?

• 700

• 800

• 740

• 850

What is 4,597 rounded to the nearest 1,000?

• 4,000

• 4,500

• 5,000

• 4,700

What is 31 rounded to the nearest ten?

• 20

• 30

• 40

• 10

What is 55 rounded to the nearest ten?

• 50

• 60

• 70

• 80

4,678
Nearest ten

• 4,670

• 4,680

• 4,700

• 4,600

8,298
Nearest Hundred

• 8,200

• 8,300

• 8,290

• 8,240

2,409
Nearest ten

• 2,400

• 2,500

• 2,410