The DAV Maths Book Class 5 Solutions and **DAV Class 5 Maths Chapter 8 Worksheet 3** Solutions of Simplification of Numerical Expressions offer comprehensive answers to textbook questions.

## DAV Class 5 Maths Ch 8 Worksheet 3 Solutions

Question 1.

Simplify the following numerical expressions.

(a) 1.1 + 2.5 – 1.5

Solution:

1.1 + 2.5 – 1.5 (1.1 + 2.5)

= 3.6 – 1.5

= 2.1

(b) 2.3 + 1.2 × 0.5 – 0.9

Solution:

2.3 + 1.2 × 0.5 – 0.9 (1.2 × 0.5)

= 2.3 + 0.60 – 0.9 (2.3 + 0.60)

= 2.90 – 0.9

= 2.00

= 2

(c) 28.9 – 20.8 + 3.9

Solution:

28.9 – 20.8 + 3.9

= 28.9 + 3.9 – 20.8 (28.9 + 3.9)

= 32.8 – 20.8

= 12.0

= 12

(d) 5.3 + 6 × 0.05 – 2.1

Solution:

5.3 + 6 × 0.05 – 2.1 (6 × 0.05)

= 5.3 + 0.30 – 2.1 (5.3 + 0.30)

= 5.60 – 2.1

= 3.50

(e) 2.5 ÷ 5 × 0.4 + 2

Solution:

2.5 ÷ 5 x 0.4 + 2

= \(\frac{2.5}{5}\) × 0.4 + 2

= 0.5 × 0.4 + 2 (0.5 × 0.4)

= 0.20 + 2

= 2.20

(f) 3.6 ÷ 0.9 × 0.5 – 2

Solution:

3.6 ÷ 0.9 × 0.5 – 2 (3.6 ÷ 0.9)

= \(\frac{3.6 \times 10}{0.9 \times 10}\) × 0.5 – 2

= 4 × 0.5 – 2 (4 × 0.5)

= 2.0 – 2

= 0

Word Problems

Example.

Simplify: 0.3 + 3.5 – 0.9 ÷ 0.3

Solution:

= 0.3 + 3.5 – 3 (Then, add 0.3 + 3.5)

= 3.8 – 3 (Lastly, subtract 3.8 – 3)

= 0.8