Assess Reasonableness of Decimal Sums and Differences
Authored by Anthony Clark
Mathematics
5th Grade
Used 8+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Round to the nearest HUNDRED to find the difference:
576.76 - 231.84
200
300
400
344.92
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Estimating is finding a value that is CLOSE or APPROXIMATE to the actual value, but it's not exact.
True
False
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose a good pair of compatible numbers to make finding the sum of 223.4 + 148.9 easier to add mentally.
200 + 100
223 + 149
225 + 150
They're already compatible.
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Estimate the sum by rounding each number to the nearest whole number and then adding.
7.114 + 6.122
The sum is approximately
(a)
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Estimate the sum by rounding each number to the nearest whole number and then adding.
6.17 + 4.7
The sum is approximately
(a)
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Estimate the sum by rounding each number to the nearest whole number and then adding.
8.598 + 2.78
The sum is approximately
(a)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Estimate the sum by rounding each number to the nearest whole number and then adding.
3.78 + 7.249
The sum is approximately
(a)
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