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**1. Convert the following into gram.**

**a. 3 kg 630 g **

= 3 × 1000 g + 630 g

= 3000 g + 630 g

= 3630 g

**b. 6 kg 100 g**

= 6 × 1000 g + 100 g

= 6000 g + 100 g

= 6100 g

**c. 5 km 600 m**

= 5 × 1000 m + 600 m

= 5000 m + 600 m

= 5600 m

**d. 1 km 7 m**

= 1 × 1000 m + 7 m

= 1007 m

**2. Add the following:**

**a)**

**b)**

**3. Conversion of centimeters.**

**Convert into meters**

**a)**

**b)**

**c) 15 m **

= 15 × 100

= 1500 cm

**d) 23 m 80 cm**

= 23 × 100 cm + 80 cm

= 2300 cm + 80 m

**4. Check if the fractions are equivalent.**

a) 2 × 9 = 18

3 × 6 = 18

The products are equal. So , ^{2}/_{3} and ^{6}/_{9} are equivalent.

b) 2 × 10 = 20

5 × 6 = 30

The products are not equal, so^{ 2}/_{5} and ^{6}/_{10} are not equal.

**5. Write the fraction for the following.**

**1. Nr - 3**

**2. Dr - 5**

Fraction = ^{3}/_{5}

**1. Nr = 4**

**2. Dr = 7**

Fraction = ^{4}/_{7}

6. Addition of fractions:

**1. ^{3}/_{9} + ^{2}/_{9} **

= ^{(3+2)}/_{9} = ^{5}/_{9}

**2. ^{4}/_{9 } + ^{3}/_{9} + ^{1}/_{9}**

=

= ^{8}/_{9}

**7. 48 pencils are to be packed equally in 6 boxes. How many will be there in each box?**

Total number of pencils = 48

Number of box = 6

Number of pencils in each box = 48 ÷ 6 = 8

**8. 125 students are to be seated in 5 rows. How many students will be seated in each row?**

Total number of students = 125

Number of row = 5

Number of students in each row = 125 ÷ 5 = 25

**9. Divide the following.**

**a. 48 ÷ 4 **

**b. 55 ÷ 5 **

a. 48 ÷ 4 = 12

b. 55 ÷ 5 = 11

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Std 3

CBSE