Question

add : 87 m 27 cm and 92 m 8 cm ​

Answer 1

$\huge\fbox\color{gray}{Question}$

$\large\bold{Add:\:\:87m,\:27cm\:and\:92m,\:8cm}$

$\small\fbox\color{red}{Before\:to\:the\:answer,\: let's\:recap\:the\:METRIC CONVERSION}$

$\small\underline\bold{Length:}$

$$\Rightarrow1\:cm = 10\:mm\\\Rightarrow1\:dm = 10\:cm\\\Rightarrow1\:m = 100\:cm\\\Rightarrow1\:m=10\:dm\\\Rightarrow1\:km=1000\:m$$

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$\huge\fbox\color{gray}{Solution}$

$\small\bold{Before\:finding\:the\:sum\:of\:two\:measurements,}$

$\small\bold{first\:we\:have\:to\:make\:sure\:that\:they\:are\:in\:same\:metric\:units.}$

→ Here, there are two different units. So we have to convert the greater unit to smaller unit (i.e., metres to centimetres).

$\small\bold{We\:know\:that\:1\:m=100\:cm.\:So,}$

(1).. 87 m = 87 × 100

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎‎= 8700 cm

(2).. 92 m = 92 × 100

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎= 9200 cm

→ Now, we can 'cm(s)' with 'cm(s)'.

(1).. 8700 cm + 27 cm = 8727 cm

(2).. 9200 cm + 8 cm = 9208 cm

$\small\bold{Finally,}$

Add 8727 cms with 9208 cms

→ 8727 + 9208 = $\large\bold{17935\:cms}$

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$\large\fbox\color{orange}{Additional\:Steps:}$

We can convert 17935 cm to other units.

→ 17935 cm = 179350 mm

→ 17935 cm = 1793.5 dm

→ 17935 cm = 179.35 m

→ 17935 cm = 0.17935 km

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Answer 2

Answer:

(a) 87m 27cm and 92m 8cm

=87+27/100 =87.27m

=92+8/100 =92.08

then add :-

87.27+92.08

1. = 179.35