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Class 6
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Maths
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Knowing Our Numbers
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Estimating and Rounding Off
Estimating and Rounding Off
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Estimating and Rounding Off
Example
Definitions
Formulaes
Estimating the Results of Operations
Example
Definitions
Formulaes
Learn with Videos
Estimating the number to nearest 10-100-1000
17 mins
Estimating Sum and Difference of 2 Numbers
13 mins
Quick Summary With Stories
Estimating to the nearest tens by rounding off
2 mins read
Estimating to the nearest hundreds by rounding off
2 mins read
Estimating to nearest Thousand by rounding Off
2 mins read
Estimating the Results of Operations-I
3 mins read
Estimating the Results of Operations-II
2 mins read
Important Questions
Round off the given numbers to the nearest tens, hundreds and thousands.
Easy
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>
Round these numbers to the nearest tens.
2
8
,
3
2
,
5
2
,
4
1
,
3
9
,
4
8
,
6
4
,
5
9
,
9
9
,
2
1
5
,
1
4
5
3
,
2
9
3
6
.
Easy
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>
Subtract:
3
x
y
+
5
y
z
−
7
z
x
from
5
x
y
−
2
y
z
−
2
z
x
+
1
0
x
y
z
Easy
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>
Round off to nearest lakhs: The given number is
3
8
,
6
5
,
6
2
,
0
4
8
Easy
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>
Estimate the product
4
7
5
×
2
2
5
rounding off each number to the nearest hundred.
Medium
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>
Solve :
2
a
−
[
4
b
−
{
4
a
−
(
3
b
−
2
a
+
2
b
)
}
]
Easy
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>
Round-off
3
7
8
9
to nearest
1
0
0
Easy
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>
Round off to the nearest
1
0
,
1
0
0
,
and
1
0
0
0
:
1
2
8
9
Medium
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>
Estimate the sum
(
4
2
5
0
5
+
2
7
8
0
7
+
2
1
3
9
7
)
to the nearest thousand.
Medium
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>
Subtract the sum of
−
1
0
3
2
and
8
7
8
from
−
3
4
.
Easy
View solution
>