Rounding
Comparing Numbers
Addition
Subtraction
Mystery Topic
100

Round to the nearest ten.


147

150
100
Which number is greater?


3,024      3,204

3,204

100

Add the numbers.

4,325 + 3,981

8,306

100

Subtract the numbers.

84,264 - 35,155

49,109

100

What place is the 4 in?

243,092

Ten thousands

200

Round to the nearest hundred.


1,248

1,200

200

Compare the numbers.


24,312 ____ 24,309

24,312 > 24,309

200

142,903 + 84,298

227,201

200

832,409 - 50,326

782,083

200

What is the value of the hundreds place?


243,809

800

300

Round to the nearest thousand.


42,501

43,000

300

Compare the numbers.


3,164,947 ____ 3,164,947

3,164,947 = 3,164,947

300

2,325,086 + 453,426

2,778,512

300

8,239,081 - 384,202

7,854,879

300

Write this number in Word form:

123,802

one hundred twenty three thousand, eight hundred two

400

Round to the nearest ten thousand.

324,982

320,000

400

Compare the numbers.


14,234,312 ____ 14,234,095

14,234,312 > 14,234,095

400

Emma needed 27,920 nails to build her rooster hut.  She also needs 14,250 screws in the hut.  How many total screws and nails does she need  for the rooster hut in all?

42,170 screws and nails

400

Chase had 52,303 ants in his driveway.  Grace came to his house and caught 14,942 of them to feed her anteater.  How many ants were left in Chase's backyard?

37,361 ants

400

What is this number in expanded form?

22,490

20,000 + 2,000 + 400 + 90 = 22,490

500

Round to the nearest hundred thousand.


21,253,912

21,300,000

500

Aubrey has 492,639 roses in her back yard.  Addy has 492,396 roses in her back yard.  Who has more roses in their yard?

Aubrey has more roses.

500

Ms. Havrish is an international shark trainer in her summers off.  She taught 154,326 sharks to do flips.  She taught 312,205 sharks to do her taxes.  How many sharks has Ms. Havrish trained?

466,531 sharks

500

Ms. Havrish, the international shark tamer, spent the summer taming deadly sharks in South America.  She tamed 492,804 sharks in Brazil.  She tamed 285,924 sharks in Argentina.  How many more sharks did she tame in Brazil than in Argentina?

206,880 sharks

500

Ms. Havrish, international shark trainer, has trained 4,938,014 sharks off the coast of Europe in her life.  What is the place of the 9 in this total?

Hundred thousands