CBSE Class 7 Maths Arithmetic Expressions (Class 7 NCERT New) Quiz 4

1. If Arun brought 5 bags of marbles with 4 marbles in each bag, how many marbles did Arun bring?

A 20 B 9 C 25 D 30

2. What is the correct value of the expression 30 + 5 × 4 if you follow the order of operations?

A 140 B 50 C 35 D 20

3. Why are brackets used in mathematical expressions?

A To make the expression look neat B To resolve confusions in evaluating expressions C To add more numbers to the expression D To change the value of the expression

4. Which of the following expressions correctly describes the number of marbles if you first multiply 5 and 4, then add 30?

A 30 + 5 × 4 B (30 + 5) × 4 C 30 + (5 × 4) D 30 × 5 + 4

5. If Irfan bought a biscuit packet for ₹15 and toor dal for ₹56, and gave ₹100 to the shopkeeper, what expression should be used to calculate the change he will get back?

A 100 – 15 + 56 B 100 + (15 + 56) C 100 – (15 + 56) D 100 × (15 + 56)

6. What is the change Irfan will get back after buying items worth ₹15 and ₹56 and paying ₹100?

A ₹141 B ₹29 C ₹44 D ₹85

7. Explain why evaluating 100 – 15 + 56 without brackets gives an incorrect result.

A It adds the values before subtracting, leading to a higher result B It multiplies the values, leading to a lower result C It ignores the order of operations, leading to confusion D It uses division instead of addition

8. What are the terms in the expression 12 + 7?

A 12 and 7 B 12 and 19 C 7 and 19 D 12 and 14

9. In the expression 83 – 14, what are the terms after converting subtraction to addition?

A 83 and –14 B 83 and 14 C 14 and –83 D –83 and –14

10. Why is subtracting a number the same as adding its inverse?

A Because the inverse has the opposite sign B Because subtraction always increases the value C Because addition and subtraction are unrelated D Because the inverse is always positive