Round to the nearest ten
Real World Problems
Estimate the sum
Estimate the difference
100
23
20
100

A new pair of jeans costs $10. A new shirt costs $7. Find the sum.

$17

100

43+26=

40+30=70

100

63-37=

60-40=20

200
57
60
200

Mike has 16 new pencils. Alex has 5 new pencils. Find the difference.

11

200

30 + 37 =

30 + 40 = 70

200

54-22=

50-20=30

300

46

50

300

Ms. Hollowell has $5 less than Mrs. Sherrill. Mrs. Sherrill has $20. How much money does Ms. Hollowell have?

$15

300

36 + 11 =

40 + 10 = 50

300

56 - 43 =

60 - 40 = 20

400

92

90

400

Mrs. Wallace has 3 more students than Mrs. Hobbs. Mrs. Hobbs has 14 students.   How many students does Mrs. Wallace have?

17

400

68  + 13 =

70 + 10 = 80

400

83 - 56 =

80 - 60 = 20

500

98

100

500

Jessica has 11 pink  bows and 13 yellow bows.  About how many bows does she have in all? Estimate the sum.

Jessica has about 20 bows.

500

74 + 21 +

70 + 20= 90

500

87 - 39 =

90 - 40 = 50