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\\January 6, 2024 4:42 PM Surender Prajapati Proof 5 Reader _________________________ Date: ___________________74

Practice Time 2F

Simplify the following expressions.
1. 32 – 8 × 2 2. 18 + 20 ÷ 4

3. 15 × 10 ÷ 2 4. 35 × 48 + 2024

5. 4025 ÷ 175 + 1362 6. 16 – 16 ÷ 2 – 3

7. 8 × 13 – 4 × 15 8. 37 – 6 × 4 + 32 ÷ 4

9. 30 – 28 + 36 ÷ 2 10. 96 ÷ 16 + 34 × 10 – 13

11. 3 × 4 – 45 ÷ 9 + 12 × 5 12. 70 ÷ 14 × 6 – 10 ÷ 5 + 1

ODMAS

When the operator ‘of’ is given in a question, follow the rules of ODMAS to find the result.

O D M A S
Remember
‘Of’ The operator ‘of’ means
Division multiplication. For

Multiplication example, 1
1
Addition 2 of 8 = × 8 = 4
2
Subtraction
1
Example: Simplify: of 15 + 2 × 5 – 4 ÷ 2.
3
Solution: 1 of 15 + 2 × 5 – 4 ÷ 2 [‘Of’, of 15 = × 15 = 15 ÷ 3 = 5]
1
1
3 3 3
= 5 + 2 × 5 – 4 ÷ 2 [Division, 4 ÷ 2 = 2]
= 5 + 2 × 5 – 2 [Multiplication, 2 × 5 = 10]

= 5 + 10 – 2 [Addition, 5 + 10 = 15]
= 15 – 2 [Subtraction, 15 – 2 = 13]

= 13

BODMAS

Sometimes, in numerical expressions, we need to group the operations and to group the
operations, we use various symbols called brackets. So, we can say, brackets are grouping
symbols. We generally use the following brackets for grouping.

(a) ( ): Parentheses or round brackets

(b) { }: Braces or curly brackets
(c) [ ]: Square brackets or box brackets

(d) : Line brackets or bar brackets or vinculum

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