Rounding by 10
Rounding by 100
True or False
Addition
Subtraction
100

Round 12 to the nearest 10

10

100

Round 123 to the nearest 100

100

100

653=213

False


100

43+28=

71

100

91-19

72

200

Round 54 to the nearest 10

50

200

Round 476 to the nearest 100

500

200

103+28=100+31

True

200

I went to the store and bought 45 apples, I then went to the market and bought 32 oranges. How many apples and oranges do I have together?

77

200

187-32=

155

300

Round 128 to the nearest 10

130

300

Round 395 to the nearest 100

400

300

350+210=500+60

True

300

557+312=

869

300

I went shopping and had $30 in my pocket. I bought three chistmas gifts that were $5 each. How much money do I have left?

30-5=25

25-5=20

20-5=15  dollars left

or you do 30-15= $15 left

400

Round 376 to the nearest 10

380

400

Round 1,453 to the nearest 100

1,500

400

124-98=234-52

False

400

What TWO numbers will get you as close to 1000 as possible? 

Remember this is about Rounding. 


655    300    213      525

300 

655 

If you round 655 to the nearest hundred you get 700. 700 plus 300 is 100

400

73-28=____+13

32
500

Round 1,358 to the nearest 10

1,360

500
Round 3,432 to the nearest 100

3,400


500

854-324=238-167

False

500

843+923

1,766

500

543-529=____-530

544

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