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Byju's Answer
Standard VI
Mathematics
Addition and Subtraction of Decimals
Replace by th...
Question
Replace
by the correct number in each of the following:
(i)
2
7
=
8
(ii)
3
5
=
35
(iii)
5
8
=
20
(iv)
45
60
=
9
(v)
40
56
=
7
(vi)
42
54
=
7
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Solution
(i) 28
2
7
=
2
×
4
7
×
4
=
8
28
(ii) 21
3
5
=
3
×
7
5
×
7
=
21
35
(iii) 32
5
8
=
5
×
4
8
×
4
=
20
32
(iv) 12
45
60
=
45
÷
5
60
÷
5
=
9
12
(v) 5
40
56
=
40
÷
8
56
÷
8
=
5
7
(vi) 9
42
54
=
42
÷
6
54
÷
6
=
7
9
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1
Similar questions
Q.
Replace
in each of the following by the correct number:
(i)
2
7
=
6
(ii)
5
8
=
10
(iii)
4
5
=
20
(iv)
45
60
=
15
(v)
18
24
=
4
Q.
Verify the following:
(i)
-
12
5
+
2
7
=
2
7
+
-
12
5
(ii)
-
5
8
+
-
9
13
=
-
9
13
+
-
5
8
(iii)
3
+
-
7
12
=
-
7
12
+
3
(iv)
2
-
7
+
12
-
35
=
12
-
35
+
2
-
7
Q.
Replace each * by the correct digit in each of the following:
(i)
8
7
6
-
*
3
*
6
*
7
(ii)
8
9
8
9
-
*
*
3
4
3
4
*
*
(iii)
6
0
0
0
1
0
7
-
*
*
8
9
7
8
5
0
6
*
*
*
*
(iv)
1
0
0
0
0
0
0
-
*
*
*
*
1
*
7
0
4
2
*
(v)
5
0
0
1
0
0
3
-
*
*
6
9
8
7
4
8
4
*
*
*
*
(vi)
1
1
1
1
1
1
-
*
6
7
8
9
5
4
3
2
*