Round to Nearest 10
Round to Nearest 100
Estimate Sums
Estimate Differences
Place Value
100

On a numberline round 78 to the nearest ten.

80


100

Round 201 to the nearest hundred.

200

100

Round to the nearest hundred to estimate the sum.

  223

+178

200 + 200 = 400

100

Round to the nearest hundred to estimate the difference.

 743

-544

700 - 500 = 200

100

A backpack costs thirty-eight dollars. A pair of shoes costs $83. Which item costs more money?

shoes

200

Round 35 to the nearest ten.

40

200

Round 406 to the nearest hundred.

400

200

Round to the nearest 100 and estimate the sum.  

  1 4 7

+ 4 0 6

100 + 400 = 500

200

Round to the nearest 100 and estimate. 

 6 6 7

− 8 4

700 - 100 = 600

200

Tell the value of each underlined digit

466

234

125

60

200

5

300
Round 14 to the nearest ten. 

10

300

On a numberline round 962 to the nearest hundred. 

1,000

300

Round to the nearest 10 and estimate the sum.   

    2 3 9

+ 6 6 1

240 + 660 = 900

300

Estimate the difference of 661 − 309 two different ways.

660 - 310 = 350

700 - 300 = 400

300

Order the heights of the students from least to greatest. Which student is the shortest? Which student is the tallest?

A - 143 in

B - 141 in

C - 134 in

134 in, 141 in, 143 in

shortest: C

tallest: A

400

Round 199 to the nearest 10. 

200

400

Round 57 to the nearest hundred.

100

400

At a movie theater, 176 people watch comedies, 282 people watch action movies, and 209 people watch mystery movies. Round to the nearest hundred to estimate the total number of people at the movie theater.

200 + 300 + 200= about 700 people

400

A pine tree is 876 inches tall. An oak tree is 644 inches tall. Round to the nearest ten to estimate how much taller the pine tree is than the oak tree.

880 - 640 = 240 inches taller

400

Descartes rounds 354 to 350. To what place does he round?

tens place

500

Round 3,483 to the nearest ten. 

3,480

500

Round 3,560 to the nearest hundred.

3,600

500

A gift shop owner sells 226 magnets, 289 teddy bears, and 262 greeting cards. Round to the nearest 10 to tell about how many items does the owner sell? 

230 + 290 + 260 = 780 items 

500

Workers are repairing 900 miles of road. They complete 214 miles one month and 355 miles the next month. About how many more miles do they have left to repair?

210 + 360 = 570  -->  900 - 570 = 330 more miles

OR

200 + 400 = 600 --> 900 - 600 = 300 more miles

500

Newton says 287 + 164 is about 500. Did Newton round to the nearest ten or to the nearest hundred to estimate the sum?

nearest hundered

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