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Intro/ Review to Rounding & Estimations
By NICHOLAS GLAESER
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Last updated almost 2 years ago
20 questions
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Question 1
1.
Round
to the nearest ten.
Example: 237 → _
240_
132
→
__________
743 → __________
336 → __________
Question 2
2.
Round
to the nearest hundred.
Example: 2,432 → _
2,400
4,768
→
__________
2,423 → __________
8,462 → __________
Question 3
3.
Round
to the nearest ten.
Example: 2,453 → __
2,450__
3,682
→
__________
54,637 → __________
41,608 → __________
Question 4
4.
Round
to the nearest hundred.
Example: 47,286 → __
47,300__
25,473
→
__________
53,729 → __________
67,821 → __________
Question 5
5.
Round
to the underlined number.
Example: 47
2
,563 → _
473,000_
854,3
6
8
→
__________
9
1
,483 → __________
7
4
8,924 → __________
Question 6
6.
Round
to the leading digit.
Example: 472,563 → _
500,000_
8,328
→
__________
683 → __________
748,924 → __________
Question 7
7.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
17 + 23
→
__________
+
__________
=
__________
Question 8
8.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
42 + 37
→
__________
+
__________
=
__________
Question 9
9.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
38 − 14
→
__________
−
__________
=
__________
Question 10
10.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
9 + 63
→
__________
+
__________
=
__________
Question 11
11.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
68 − 21
→
__________
−
__________
=
__________
Question 12
12.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
12 + 82
→
__________
+
__________
=
__________
Question 13
13.
Round
to the nearest ten.
Example: 263 → _
260_
164 → _______ 281 → _______ 538 → _______
Question 14
14.
Round
to the nearest hundreds.
Example: 6,473 → _
6,500_
7,564 → _______ 3,281 → _______ 5,738 → _______
Question 15
15.
Round
to the underlined digit.
Example: 34,
5
62 → _
34,600_
3
4
,269 → _______ 7
2
9,281 → _______ 25,
7
38 → _______
Question 16
16.
Round
to the leading digit.
Example: 49,502 → _
50,000_
723,483 → _______ 3,281 → _______ 26,738 → _______
Question 17
17.
Estimate
the sum or difference by rounding to the nearest ten.
Example:
28 + 17
→ __
30
__ + __
20
__ = __
50
__
46 + 31
→
_______
+ _______ = _______
Question 18
18.
Estimate
the sum or difference by rounding to the nearest hundred.
Example:
278 + 137
→ __
300
__ + __10
0
__ = __
400
__
486 + 341
→
_______
+ _______ = _______
Question 19
19.
Estimate
the sum or difference by rounding to the nearest hundred.
Example:
278 + 137
→ __
300
__ + __10
0
__ = __
400
__
5,263 − 2,823
→
_______
− _______ = _______
Question 20
20.
Estimate
the sum or difference by rounding to the leading number.
Example:
278 + 37
→ __
300
__ + __
40
__ = __
260
__
24,389 + 4,823
→
_______
+ _______ = _______