We will practice the questions given in the worksheet on simplification of numerical expressions. We know to simplify a numerical expression having two or more operations, we perform operation like: Division first, followed by Multiplication, Addition and then Subtraction.

**1. Simplify the following numerical expression involving whole numbers:**

(i) 12 + 4 - 8 ÷ 2 × 3

(ii) 7 - 5 + 14 ÷ 2 + 6

(iii) 37 - 6 × 4 + 32 ÷ 8

(iv) 64 - 48 ÷ 6 × 4 + 8

**2. Simplify the
following numerical expression involving fractional numbers:**

(i) 3\(\frac{1}{2}\) + \(\frac{5}{8}\) ÷ \(\frac{3}{4}\) - \(\frac{1}{2}\) × 2\(\frac{1}{2}\)

(ii) 4\(\frac{1}{4}\) + 3\(\frac{1}{8}\) ÷ 1\(\frac{1}{4}\) - 1\(\frac{1}{4}\)

(iii) \(\frac{5}{6}\) ÷ \(\frac{1}{3}\) + \(\frac{3}{4}\) - \(\frac{5}{4}\)

**3. Simplify the
following numerical expressions** **involving
decimal numbers**:

(i) 0.2 + 1.3 - 0.4 × 1.5

(ii) 0.3 × 0.4 - 2.4 ÷ 6 + 1.2 × 4

(iii) 0.72 ÷ 1.2 + 3.5 × 4.2 - 1.6

(iv) 9.2 + 3.5 - 4.9 - 3.5 ÷ 0.7 × 1.2

(v) 5.01 × 1.2 - 2.4 ÷ 2

**4. Simplify the
following numerical expressions**:

(i) 8{1 - {3 + (5 - 6 + 7)}}

(ii) 4\(\frac{7}{8}\)[3\(\frac{1}{2}\) + {8\(\frac{17}{24}\) - (1\(\frac{1}{2}\) + 5\(\frac{1}{2}\) + 1\(\frac{1}{2}\))}]

(iii) 10 + [5 - {4 - 2(3 + \(\frac{1}{2}\) - \(\frac{1}{4}\)) ÷ 5\(\frac{1}{2}\)}]

(iv) 0.8{0.75 ÷ (1.35 - 0.6)} - 0.8

(v) 1 - [0.3 - {0.5 - (0.2 - 0.7) - 0.1}]

(vi) 30 - [15 - {6\(\frac{1}{2}\) - (\(\frac{4}{3}\) - \(\frac{1}{2}\))}]

(vii) 0.5 + {10.5 ÷ 0.5 + 6}

(viii) 7 - [6 - {5 - (4 - 3)}] ÷ 2

(ix) 2\(\frac{1}{3}\) ÷ 4\(\frac{2}{5}\) + 6\(\frac{1}{2}\) ÷ 7 × 5

Answers for the worksheet on simplification of numerical expressions are given below.

**Answers:**

**1.** (i) 4

(ii) 15

(iii) 17

(iv) 40

**2.** (i) \(\frac{37}{12}\) or 3\(\frac{1}{12}\)

(ii) \(\frac{11}{2}\) or 5\(\frac{1}{2}\)

(iii) 2

**3.** (i) 0.9

(ii) 4.52

(iii) 13.7

(iv) 1.8

(v) 4.812

**4.** (i) 10

(ii) \(\frac{1}{8}\)

(iii) 12\(\frac{1}{4}\)

(iv) 0

(v) 1.6

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