Decimals Test

Result

Decimals Test - 3

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Question 1
1 / -0

Rohan had Rs. 815.75 with him and he bought books worth Rs. 215.50. How much money would be left with him?

A
Rs. 555.12

B
Rs. 600.25

C
Rs. 650.50

D
Rs. 712.65

Solution

Total money = Rs. 815.75

Money spent = Rs. 215.50

Money left = 815.75 - 215.50

= Rs. 600.25
Question 2
1 / -0

Bob went to work using two different means of travel. He travelled 4 km and 15 m by auto, and 8 km and 45 m by bus. Find the total distance travelled in km.

A
12.06

B
12.52

C
13.15

D
13.28

Solution

Distance covered by auto = 4 km and 15 m

= 4 + (15 ÷ 1000) km

= (4 + 0.015) km

= 4.015 km

Distance covered by bus = 8 km and 45 m

= 8 + (45 ÷ 1000) km

= (8 + 0.045) km

= 8.045 km

Total distance covered = 4.015 + 8.045

= 12.06 km
Question 3
1 / -0

Kunal had Rs. 200 with him. He gave Rs. 14.45 to two of his friends each, Rs. 21.45 to three of his friends each, and Rs. 18.34 to another two of his friends each. Find the total amount of money left with him.

A
Rs. 70.07

B
Rs. 65.34

C
Rs. 60.12

D
Rs. 55.75

Solution

Amount had initially Rs. 200.

According to the question,

Amount given = (14.45 × 2) + (21.45 × 3) + (18.34 × 2)

= 28.9 + 64.35 + 36.68

= Rs. 129.93

Amount left = Rs. 200 - Rs. 129.93 = Rs. 70.07
Question 4
1 / -0

A college purchases books for the library. The cost of 65 books is Rs. 4865.35. Find the cost of one such book.

A
Rs. 80.12

B
Rs. 74.85

C
Rs. 71.12

D
Rs. 66.15

Solution

Cost of 65 books = Rs. 4865.35

Cost of 1 book = Rs. (4865.35 ÷ 65)

= Rs. 74.85
Question 5
1 / -0

Select the INCORRECT statement.

(a) Anil has Rs. 50 with him. He spends Rs. 18.65 on toys. He is now left with Rs. 31.35.
(b) A person walks 345 m on Monday, 234 m on Tuesday and 515 m on Wednesday. He walks 1.094 km altogether.
(c) A person has Rs. 500.50 with him. He gives Rs. 125.25 to his son and Rs. 315.50 to his daughter. He is left with Rs. 59.75.
(d) There is a 1 litre bottle. A boy pours 513.57 ml of lemon juice in it and 405.43 ml of orange juice. He is able to fill the bottle completely.

A
(a)

B
(b)

C
(c)

D
(d)

Solution

(a)Money he has = Rs. 50
Money spent = Rs. 18.65
Money left = Rs. (50 - 18.65) = Rs. 31.35

(b) Total distance travelled = (345 + 234 + 515) m = 1094 m = (1094 ÷ 1000) km = 1.094 km

(c) Money he has = Rs. 500.50
Money given to son = Rs. 125.25
Money given to daughter = Rs. 315.50
Total money given = Rs. (125.25 + 315.50) = Rs. 440.75
Money left = 500.50 - 440.75 = Rs. 59.75

(d) Amount of lemon juice= 513.57 ml
Amount of orange juice = 405.43 ml
Total = 919 ml or 0.919 l (1 l = 1000 ml)
So, he hasn't filled the bottle completely. This statement is INCORRECT.
Question 6
1 / -0

Study the following statements carefully and choose the correct option.

Statement 1: (4.25 + 6.78 + 1.22) > (9.55 - 1.23 + 6.89)
Statement 2: The product of two decimal numbers is same even if the order is reversed.

A
Both statements 1 and 2 are true.

B
Only statement 1 is true.

C
Only statement 2 is true.

D
Both statements 1 and 2 are false.

Solution

For statement 1:

4.25 + 6.78 + 1.22 = 12.25

9.55 - 1.23 + 6.89 = 15.21

12.25 < 15.21

So, statement 1 is false.

Statement 2 is true. It is called distributive property of decimals.