Rounding
Estimating Sums
Estimating Differences
Sums and Differences
Ms. Z's Decimal Challenge
100
769.96 rounded to the nearest tenth
What is 770.00
100
8.9 + 6.1
What is 15
100
9.9 - 4.2
What is 6
100
3.12+14.16
What is 17.28
100
7 x 1.5
What is 10.5
200
89.43 rounded to the nearest one
What is 89
200
9.17+12.3
What is 21
200
17.9 - 6.3
What is 12
200
20.9 - 15.7
What is 5.2
200
What is 10% of 100?
What is 10
300
765.13 rounded to the nearest hundred
What is 800
300
75.8 + 3.5
What is 80
300
54.6 - 9.1
What is 46
300
98.54 - 16.4
What is 82.14
300
What is 10% of $43
What is $4.30
400
12,293.06 rounded to the nearest tenth
What is 12,293.1
400
108.5 + 211.9
What is 321
400
91.6 - 22.4
What is 70
400
10.8 + 843.57
What is 854.37
400
Ms. Zimmer has to pay 8% tax on something that costs $12.89. How much is the tax? (Clue: It should should only have 3 digits... $_._ _)
What is $1.03
500
9,099.99 rounded to the nearest hundreth
What is 9,099.99
500
999.7 + 9.9
What is 1,010
500
89.5 - 15.08
What is 75
500
197.83 - 19.4
What is 178.43
500
Mrs. Dry collected $1.25 from each student in her math class for a special project. How much money did she collect?
What is $27.50
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