Rounding to 10
Comparing Numbers
Rounding to 100
Adding/Subtracting
Estimate
100

55 Rounded to the nearest 10

60

100

564 ____ 654

<

100

750

800

100

357 + 241

598

100

235 - 95

200-100 = 100

200

32 Rounded to the nearest 10

30

200

Order from Least to Greatest

651, 648, 673, 354

354, 648, 651, 673

200

263

300

200

There were 289 cars in the parking lot.  Another 137 cars arrived.  How many cars are in the parking lot now?

426 Cars

200

186 + 317 =

200 + 300 = 500

300

539 Rounded to the nearest 10

540

300

Order from Greatest to Least

528, 378, 387, 783

783, 528, 387, 378

300

544

500

300

Mrs. Troyer's class collected 400 bottle caps.  Mrs. Cook's class collected 285 bottle caps.  How many more caps did Mrs. Troyer's class collect than Mrs. Cooks?

115 more caps

300
Is 225 + 289 about 400? Yes or No?

No. It's about 500

200 + 300 = 500

400

54 Rounded to the nearest 10

50

400

345 ___ 345

=

400

782

800

400

Help Drew find the difference between 186 and 317.  What is the difference?

131

400

39 + 43 =

40 + 40 = 80

500

448 Rounded to the nearest 10

450

500

4 x 5 ___ 6 x 4

<

500

345

300

500

FREE SPOT!

FREE SPOT

500

Estimate how much Maxwell the moose weighs to the nearest 10 and nearest 100.


843 lbs.

About 800 lbs.


About 840 lbs.

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