Q.1) If the cost of 9 oranges is ₹ 180, find the cost of 12 such oranges?
a) ₹ 240
b) ₹ 260
c) ₹ 220

Q.2) If the cost of 6 mangoes is ₹ 48, find the cost of 8 such mangoes?
a) ₹ 64
b) ₹ 72
c) ₹ 56

Q.3) 8 women can reap a field in 18 days, in how many days can 12 women reap the same field?
a) 18 days
b) 12 days
c) 16 days

Q.4) 7 horses can graze a field in 12 days. How many horses can graze it in 14 days ?
a) 8
b) 4
c) 6

Q.5) If the annual salary of a person is ₹ 18000, then find his salary for 2 months ?
a) ₹ 3000
b) ₹ 3500
c) ₹ 2500

Unitary Method Worksheet Grade 4 Explanations

Q.1) Explanation – Unitary Method Worksheet Grade 4

Cost of 9 oranges = ₹ 180
Cost of 1 orange = ₹ 180/9
= ₹ 20
Cost of 12 oranges = ₹ ( 20 x 12 )
= ₹ 240
Hence, the cost of 12 oranges is ₹ 240

Correct Answer – a) ₹ 240

Q.2) Explanation –

Cost of 6 mangoes = ₹ 48
Cost of 1 mango = ₹ 48/6
= ₹ 8
Cost of 8 mangoes = ₹ ( 8 x 8 )
= ₹ 64
Hence, the cost of 8 mangoes is ₹ 64

Correct Answer – a) ₹ 64

Q.3) Explanation – Unitary Method Worksheet Grade 4

Clearly, less women will take the more days.
And, more women will take less days.
8 women can reap a field in = 18 days
1 woman can reap a field in = ( 18 x 8 ) days
Hence, 12 women can reap a field in = (180 x 8)/12 days = 12 days
Hence, 12 women can reap a field in 12 days

Correct Answer – b) 12 days

Q.4) Explanation – Unitary Method Worksheet Grade 4

For 12 days field can be grazed by 7 horses
For 1 day field can be grazed by ( 7 x 12 ) horses
For 14 days field can be grazed by (7 x 12)/14 horses
= 6 horses
Hence, 6 horses can grazed it in 14 days