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Mass 

Mass is generally used to measure the vegetables, weight of the baby, wight of any thing.

Unit
Value
1 Milligram
1/1000 gram
1 Centigram
1/ 100 gram
1 Decigram
1/10 gram
1 Gram
Basic unit
1 Decagram
10
1 Hectogram
100 gram
1 Kilogram
1000 gram

S B D
Small → Big → ÷

OR

B S M
Big → Small → X


Examples on Mass :-
1) Convert 1250 milligram (mg) to gram.
Solution: milligram is the smaller unit than gram.
So, S(small)→B (Big) → ÷
∴ 1250 mg = 1250 / 1000 = 1.250 g.
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2) Convert 52 kg to gram.
Solution: kg is the bigger unit than gram.
So, B(Big)→ S (Small) → X
∴ 52 kg = 52 x 1000 = 52,000 g.
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3) Convert 1.2 hectogram to gram.
Solution: hg is the bigger unit than gram.
So, B(Big)→ S (Small) → X
∴ 1.2 hg = 1.2 x 100 = 120 g.
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4)A new born baby is 3835 g. How many kg is that?
Solution : gram is the smaller unit than kg.
So, S(small)→B (Big) → ÷
∴ 3835 g = 3835 / 1000 = 3.835 kg.
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5) An empty suitcase is 2.50 kg. How many decagram is that ?
Solution : Here the weight of suitcase is in kg which bigger unit than decagram.
∴ Apply B(Big)→S (Small) → X
⇒ 2.50 kg = 2.50 x 100 = 250 decagram.
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6) Mr. Ryan bought 500 g apples, 750 g grapes and 250 g strawberries, and 1 kg oranges. How many kg of fruit did she buy?
Solution :
1 kg oranges = 1000 g oranges
Total fruits = Apples + grapes + strawberries + oranges
= 500 + 750 + 250 + 1000
= 2500 g
gram is a smaller unit than kg
So S(small)→B (Big) → ÷
∴ 2500 g = 2500 /1000
= 2.5 kg

Measurements
Length
Weight
Capacity

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