Page 179 - Touchpad Mathematics_Ver1.0_C5

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2. Complete the following table.

Weight Weight in smaller unit
a. 5 kg 42 g
b. 5190 g

c. 9 kg 500 g
d. 8 g 234 mg
e. 7234 mg

f. 6 kg 110 g

3. Convert into kg and g.

a. 1375 g b. 5264 g c. 8000 g d. 9200 g

4. Convert:

a. 48 kg into g b. 60 g into mg c. 770 mg into cg d. 1 kg 312 g into g
5. fill in the blanks.

a. 5324 mg = _____ g _____ mg b. 5 kg 3 g = _____ g
c. 3260 g = ____ kg ____ g d. 1999 g = ____ kg ____ g

6. using 1 quintal = 100 kg and 1 tonne = 10 quintals = 1000 kg, fill in the blanks.

a. 5000 kg = ______ tonnes
b. 6850 kg = ______ tonnes ______ quintals ______ kg
c. ______ kg = 12 tonnes
d. 8560 kg = ______ quintals ______ kg

oPERATIonS on WEIGhT (MASS)

Example 1. Add 15 kg 500 g, 21 kg 340 g and 5 kg 250 g. kg g
Solution. 1 5 5 0 0

Method 1. We write the given weights one below the other in 2 1 3 4 0
such a way that the same units are placed in the + 5 2 5 0
same column (kg under kg, g under g, etc.) and then 4 2 0 9 0
add as usual.

Thus, the answer is 42 kg 90 g.

Method 2. Convert the weights into grams and add them. 1 5 5 0 0 g
15 kg 500 g = 15000 + 500 = 15500 g 2 1 3 4 0 g
21 kg 340 g = 21000 + 340 = 21340 g + 5 2 5 0 g

5 kg 250 g = 5000 + 250 = 5250 g 4 2 0 9 0 g
Thus, the answer is 42090 g = 42000 g + 90 g = 42 kg 90 g.

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Measurement