Subtraction (2-digit) — Chapter Test | Class 2 IMO

Q1

Which is the odd one out (three equal 20): 50 − 30, 45 − 25, 38 − 18, 40 − 22?

40 − 22 = 18; the other three equal 20.

Q2

If 9 − 4 = 5, then 90 − 40 = ___ ?

Tens subtract the same way: 90 − 40 = 50.

Q3

Fill the blank: 60 − ___ = 45 ?

60 − 45 = 15.

Q4

Subtract: 89 − 34 = ?

Ones 9 − 4 = 5, tens 8 − 3 = 5, so 55.

Q5

Subtract: 72 − 38 = ?

Borrow: 12 − 8 = 4; tens 6 − 3 = 3, so 34.

Q6

Subtract: 100 − 45 = ?

100 − 45 = 55.

Q7

What must be added to 36 to make 60?

60 − 36 = 24.

Q8

A shop had 54 breads; 29 were sold. How many breads are left?

54 − 29 = 25 breads.

Q9

Riya scored 45 and Sara scored 38. How many more did Riya score?

45 − 38 = 7 more.

Q10

A water tank holds 90 litres; 60 litres are used. How much is left?

90 − 60 = 30 litres.

Q11

Think of a number. Add 20, you get 65. What is the number?

65 − 20 = 45.

Q12

A pack had 80 sweets. 25 were given away and 15 were eaten. How many are left?

80 − 25 = 55, then 55 − 15 = 40 sweets.