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Byju's Answer
Standard VI
Mathematics
Associative Property
By re-arrangi...
Question
By re-arranging the given numbers, evaluate:
21
+
22
+
23
+
24
+
25
+
75
+
76
+
77
+
78
+
79
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Solution
21
+
22
+
23
+
24
+
25
+
75
+
76
+
77
+
78
+
79
=
(
21
+
79
)
+
(
22
+
78
)
+
(
23
+
77
)
+
(
24
+
76
)
+
(
25
+
75
)
(By associative law)
=
100
+
100
+
100
+
100
+
100
=
500
.
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By rearranging the given numbers, evaluate:
(iii)
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