Rounding to tens
Rounding to hundreds
Rounding to 10 3-digits
Word Problems
Adding/Subtracting
100
Round 73 to the nearest ten
What is 70
100
Round 275 to the nearest hundred
What is 300
100
Round 391 to the nearest ten
What is 390
100
Ms. Zehr has 78 spiral notebooks. About how many spiral notebooks does she have?
What is 80 spiral notebooks.
100

Estimate the sum of 86-24

90-20=70

200
Round 14 to the nearest ten
What is 10
200
Round 393 to the nearest hundred
What is 400
200
Round 647 to the nearest ten
What is 650
200
Mrs. Seiber has 54 Junie B. Jones books in her classroom. About how many Junie B. Jones books does she have?
What is 50
200

Estimate the sum of 124+42

120+40=160

300
Round 68 to the nearest ten
What is 70
300
Round 98 to the nearest hundred
What is 100
300

Round 574 to the nearest ten

570

300
Ms. Maynard has 82 pencils in her classroom. About how many pencils does she have?
What is 80
300

Estimate the sum of 335+102

340+100=440

400
Round 37 to nearest ten
What is 40
400
Round 723 to the nearest hundred
What is 700
400
Round 853 to the nearest ten
What is 850
400
Mrs. Swan has 945 books in her classroom. About how many books does she have?
What is 900
400

Estimate the sum of 486-324=

490-320= 170

500
Round 98 to nearest ten
What is 100
500
Round 18 to the nearest hundred
What is 0
500

Round 995 to the nearest ten

What is 1000

500
Mrs. Knudtson has 250 rocks in her garden. About how many rocks does she have?
What is 300
500
Estimate the sum of 776-488=

780-490=290

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