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Miss Neuhoff

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Rounding Addition Subtraction Fractions

300 300 300

200

400

200

100

500 500 500 500

100

Row 1, Col 1

Round 23 to the nearest 10

20

1,2

326+ 513

839

1,3

476-272

204

1,4

Which fraction is equivalent to ½?

a.5/6b.4/8 c.16/8d.14/26

b. 4/8

2,1

Round 609 to the nearest 100

600

2,2

816+ 136

952

2,3

793-556

237

2,4

In the fraction : 2/5the numerator is the denominator is

Numerator: 2 Denominator: 5

3,1

Round 792 to the nearest 100

800

3,2

674+ 188

862

3,3

661- 487

174

3,4

Write a fraction in which 6 is the numerator and 10 is the denominator.

6/10

4,1

Round 47 to the nearest 100

0

4,2

Yasmin has a box with 534 pictures in it. Her brother Mark has 461 pictures

of his own. How many pictures do they have all together?

995 pictures

4,3

Betsy has 457 pennies. She uses 230 of them to buy a magazine.How many pennies does Betsy have left?

457-230=227 pennies

4,4

Write a fraction for the part of the set of T-shirts made up of striped T-shirts.

4/12 or 1/3

5,1

Round 998 to the nearest 100

1,000

5,2

Brad and Kate were solving an addition problem. Kate told Brad that212 + 451 = 823.

Use estimation to explain why you think Kate is wrong.

Estimate: 200 + 500 = 700

Actual: 653

5,3

Your friend Anton told you that 647 − 127 = 416. Use estimation to explain

why you think Anton is wrong.

Estimate: 600-100 = 500

Actual: 647-127 = 520

5,4

Which would be a larger piece, ⅜ or ½ of the pizza?

½ because 1/2 is 4 pieces, but 3/8 is only 3 pieces