Page 105 - Maths Class 05

Example : Subtract 10.46 from 18.89.

Solution :
1 8 . 8 9

– 1 0 . 4 6
18.89 – 10.46 = 8.43
8 . 4 3

Practice - 5.6
Practice - 5.6
Practice - 5.6
Practice - 5.6
1. Add the following.

a. b. c. d.
0 . 3 7 3 . 3 1 6 7 . 0 0 5 . 0 8
+ 0 . 2 9 + 1 . 4 2 + 2 8 . 3 5 + 0 . 3 7

2. Solve.

a. 13.81 – 12.009 b. 4.912 – 0.063 c. 19.93 – 7.43

d. 3.78 – 2.12 e. 1428.6 – 0.329 f. 23.39 – 19.46
g. 816.07 – 717.291 h. 428.32 – 391.67 i. 4.421 – 3.631

3. What is to be added to 3.45 to get 15 ?

4. A nurse needs to make sure that a patient receives 1.12 liters of fluid during a 24-hour
period. The IV bottle originally contained 2.1 liters of fluid. How much fluid should be
left in the IV bottle when the patient has been given the necessary amount of fluid for
the day ?

5. A rose plant measured 8.6 cm on Saturday. It had grown 0.15 cm on Friday. What was its
height on Friday ?

Multiplication of Decimals

Multiplication by 10, 100, 1000

Study the following examples:

8 49
1. 0.8 × 10 = × 10 = 8 2. 4.9 × 10 = × 10 = 49
10 10

Ones Tenths Tens Ones Tenths
8 × 10 4 9 × 10

8 4 9

Mathematics-5 105