CBSE Class 3 Mathematics Revision Worksheet Set 02

Question 1. Name the given items and tell the purpose for which they are used.
Answer: Item 1: Measuring Tape. Purpose: Used for measuring lengths, body dimensions, or longer curved distances.
Item 2: Scale (Ruler). Purpose: Used for measuring short lengths and drawing straight lines.
In simple words: Measuring tape and ruler are tools used to measure lengths and distances.

Exam Tip: Always identify measuring tools correctly by observing their flexibility and markings.

Question 2. Find out the distance between the given places.
Answer:
a) P to Q: 200 km
b) S to P: 210 km
c) S to Q: Distance from S to P + Distance from P to Q = \(210\text{ km} + 200\text{ km} = 410\text{ km}\)
d) R to S: Distance from R to Q + Distance from Q to P + Distance from P to S = \(420\text{ km} + 200\text{ km} + 210\text{ km} = 830\text{ km}\) (or direct path if applicable, following the mapped routes)
In simple words: Add the lengths of individual route segments to find the total distance between two distant places.

Exam Tip: Pay attention to the connecting paths and intermediate stations when calculating total distance.

Question 3. Find out the total money spent by these children.
Answer:
a) Rahul: Rs. 100 + Rs. 50 + Rs. 10 + Rs. 2 = Rs. 162
b) Mohit: Rs. 100 + Rs. 500 + Rs. 10 + Rs. 5 + Rs. 5 = Rs. 620
c) Lovely: Rs. 500 + Rs. 500 + Rs. 5 + Rs. 2 = Rs. 1007
In simple words: Add the values of all the given currency notes and coins to find the total amount.

Exam Tip: Carefully note the denomination printed on each note and coin before adding.

Question 4. Draw and show the currency you will need to buy these items.
Answer:
a) Rs. 50: One Rs. 50 note (or five Rs. 10 notes)
b) Rs. 25: One Rs. 20 note and one Rs. 5 coin (or two Rs. 10 notes and one Rs. 5 coin)
c) Rs. 260: Two Rs. 100 notes, one Rs. 50 note, and one Rs. 10 note
In simple words: Break down the total amount into standard Indian currency denominations like notes of 500, 100, 50, 20, 10 and coins of 5, 2, 1.

Exam Tip: Use standard currency denominations to make up the exact required amount.

Question 5. Tick the correct option.
a) Amit has Rs. 450. He wants to pay Rs. 500 for the school carnival how much more money does he need?
(a) Rs. 40
(b) Rs. 50
(c) Rs. 30
(d) Rs. 10
Answer: (b) Rs. 50
Amount needed = Rs. 500 - Rs. 450 = Rs. 50
In simple words: Subtract the amount Amit has from the total amount he needs.

Exam Tip: Always subtract the smaller amount from the larger amount to find the difference.

b) Each pencil costs Rs. 5. Find the cost of 45 such pencils?
(a) Rs. 200
(b) Rs. 225
(c) Rs. 300
(d) Rs. 450
Answer: (b) Rs. 225
Cost of 1 pencil = Rs. 5
Cost of 45 pencils = \(45 \times 5 = 225 \text{ Rs.}\)
In simple words: Multiply the cost of one item by the total number of items.

Exam Tip: For finding the total cost of multiple identical items, multiplication is used.

Question 6. Arrange and add.
Answer:
a) Rs. 40.60 and Rs. 50.40
\(\begin{array}{r@{\quad}l} \text{Rs. } 40.60\) + \text{Rs. } 50.40 \\ \hline \text{Rs. } 91.00 \end{array} \)
b) 80 km 45 m and 17 km 38 m
\(\begin{array}{r@{\quad}l} \text{80 km } 045\text{ m}\) + \text{17 km } 038\text{ m} \\ \hline \text{97 km } 083\text{ m} \end{array} \)
In simple words: Align the numbers by their decimal points or units, and add column by column from right to left.

Exam Tip: Make sure units like meters are written with three digits (e.g., 45 m as 045 m) when adding with kilometers.

Question 7. Arrange and subtract.
Answer:
a) Rs. 14.80 from Rs. 57.93
\(\begin{array}{r@{\quad}l} \text{Rs. } 57.93\) - \text{Rs. } 14.80 \\ \hline \text{Rs. } 43.13 \end{array} \)
b) 39 km 70 m from 80 km 50 m
\(\begin{array}{r@{\quad}l} \text{80 km } 050\text{ m}\) - \text{39 km } 070\text{ m} \\ \hline \text{40 km } 980\text{ m} \end{array} \)
In simple words: Place the smaller value below the larger value and subtract with proper borrowing if needed.

Exam Tip: Remember that 1 km = 1000 m when borrowing for distance subtraction.

Q1) Write Roman Numeral for the following :-

a) 500 - D  b) 100 - C  c) 1000 - M
d) 40- XL    e) 50 - L     f) 10 - X
g) 20 - XX  h) 30 - XXX  i) 60 - LX
j) 70 - LXX  k) 80- LXXX  l) 90- XC

Q2) Predecessor Numerals Successors
a)     4 0 7              4 0 8          4 0 9
b)     3 9 1              3 9 2          3 9 3
c)      8 9                 9 0              9 1
d)     5 8 9               5 9 0         5 9 1
e)      7 3                 7 5             7 6

Q3) Add the following:-

a) 2 3 3
+ 0 2 0
    1 0 6
________
     3 5 9
________

b) 7 2 0
+ 3 0 5
   2 2 6
_______
  12 5 1
_______

Q4) Subtract the following:-

a) 8 6 3
-- 6 3 3
________
    2 3 0
________

b) 9 8 7
--  3 1 5
________
     6 7 2
________

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