Rounding Jeopardy

Words to Know

100

Friendly Number

Numbers that end in a zero. 

200

What is another word for Round?

Estimate 

300

What does SUM mean?

To Add

400

What does DIFFERENCE mean?

To Subtract

500

What does ABOUT mean?

To Round or Estimate

When to Round...

100

What tells you to round DOWN?

Numbers 0-4

200

What tells you to round UP?

Numbers 5-9

300

Does 56 round UP or DOWN? To the nearest TEN

UP to 60

400

Does 43 round UP or DOWN? To the nearest TEN

Down to 40

500

Does 136 round UP or DOWN? To the nearest HUNDRED

Down to 100

Rounding Tens

100

23

20

200

81

80

300

165

170

400

233

230

500

446

450

Rounding Hundreds

100

121

100

200

687

700

300

423

400

400

1,512

1,500

500

3,986

4,000

Sum/Difference

100

What is the sum of 579 and 693?

1,272

200

What is the difference of 890 and 549?

341

300

What is the ROUNDED sum of 643 and 125? (nearest TEN)

768 is 770

400

What is the ROUNDED difference of 876 and 154? (nearest hundred)

722 is 700

500

About how much is 1345+543 to the nearest HUNDRED?

1,888 is 1,900