Exercise 5.4 (Money)

Exercise 5.4

1. Priya bought 20 balloons. If the cost of one balloon is ₹6, then find the cost of 20 balloons.

Number of balloons = 20

Cost of 1 balloon = ₹ 6

Cost of 20 balloons = 20 x 6 = ₹ 120

Answer: Cost of 20 balloons = ₹ 120

2. Chinthamani bought 28 chocolate for her birthday. If the cost of a chocolate is ₹ 7 then find the total cost of 28 chocolates?

Number of chocolates = 28

Cost of 1 chocolate = ₹ 7

Cost of 28 chocolates = 28 x 7 = ₹ 196

Answer: Cost of 28 chocolates = ₹ 196

3. Ashok purchased 9 decorative papers at the cost of ₹ 450 for his town festival. Find the cost of a decorative paper?

No. of decorative papers = 9

Cost of decorative paper = ₹ 45

Cost of 1 decorative paper = 45 ÷ 9 = ₹ 5

Answer: Cost of 1 decorative paper = ₹ 5

4. Geethanjali bought 10 pencils at the cost of ₹ 70 from the supermarket. Find the cost of a pencil?

No. of pencils = 10

Cost of 10 pencils = ₹ 70

Cost of 1 pencil = 70 ÷ 10 = ₹ 7

Answer: Cost of 1 pencil = ₹ 7

5. Kuppan bought pencil and pen for ₹ 24.50 and ₹ 6.50 from his total amount ₹ 50. Find the total cost of things that he bought. Also find the balance amount?

Step: 1 

Cost of pencil  = ₹ 24. 50

Cost of Pen     = ₹ 6. 50

Total               = ₹ 31.00

Step : 2

Total amount    = ₹ 50. 00

Cost of things  = ₹ 31.00

Balance            = ₹ 19. 00

Answer: Total cost of things = ₹ 31

Balance amount = ₹ 19

6. A teacher went to the science exhibition with their student. The entry fee is ₹ 250 and the teacher bought some materials for the school for ₹ 320, she had the balance amount of ₹ 330, find the amount that she had?

Entry Fee                     = ₹ 250

Cost of materials          = ₹ 320

Balance amount             = ₹ 330

Total amount she had    = ₹ 900

Answer: Total amount she had = ₹ 900