Rounding Review

About Rounding

100

What does every rounded number end with?

0

200

What is our chant and rule for rounding up or down?

4 or less let it rest, 5 or more raise the score (or add one more)

300

Why do we round numbers?

Answers vary

Rounding to 10 (2 digits)

100

3

0

200

18

20

300

55

60

400

62

60

500

99

100

Rounding to 10 (3 digits)

100

216

220

200

734

730

300

113

110

400

444 

440

500

922

920

Rounding to 100

100

999

1000

200

315

300

300

457

500

400

573 

600

500

815

800

Challenge Questions

100

What is 1003 rounded to the nearest 100?

1000

200

Pick 2 numbers that round to 100

95, 96, 97, 98, 99, 101, 102, 103, 104

300

What is 1183 rounded to the nearest 100?

1200