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Question

Match the equivalent pairs.

A
021
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B
0201
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C
0.040
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D
0.40
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Solution

Both 21 and 021 are the same thing since, 0 before 21 does not change the value.

Both 201 and 0201 are the same thing since 0 before 201 does not change the value.

Both 0.04 and 0.040 are the same thing since 0.04 is the same as 0.040.
O . t h th
0 . 0 4 0
From place value chart,
O =0
Place value =0×1=0
t =0
Place value =0×410=0
h =4
Place value =4×1100=0.04
th =0

Place value =0×11000=0

So, the given decimal is 0+0+0.04+0=0.04

Hence, both 0.04 and 0.040 are equivalent.


Both 0.4 and 0.40 are the same thing since 0.4 is the same as 0.40.

Let's understand this with place value chat.
Place value chart of 0.40
O . t h
0 . 4 0
From place value chart,
O =0
Place value =0×1=0
t =4
Place value =4×410=0.4
h =0

Place value =0×1100=0

So, the given decimal is 0+0.4+0=0.4

Hence, both 0.4 and 0.40 are equivalent.


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