RBSE Class 3 Maths We Learnt and Understood-4 Solutions

Regular practice of RBSE Class 3 Maths Solutions We Learnt and Understood-4 Question Answer sharpens your problem-solving skills.

RBSE Class 3 Maths We Learnt and Understood-4 Question Answer

Question 1.
Mark correct (✓) or incorrect (×) for the following-
(i) 453 = 400 + 560 + 2
Solution : (×)

(ii) 540 = 50 + 0 + 4
Solution : (×)

(iii) 9 tens = 90
Solution : (✓)

(iv) 7 hundreds = 700 units
Solution : (✓)

(v) 304 > 430
Solution : (×)

Question 2.
Show the following numbers on a Numbers Line-

Solution :

Question 3.
A number has 1 in the hundreds place, 9 in the tens place and 7 in the units place. Write the number in words.
Solution :

Question 4.
The distance from Mayank’s house to school is 5 km. If he has covered a distance of 2 km by walking, then what is the remaining distance from his house to school?
Solution :
Remaining distance
= Total Distance – Distance walked
= 5 kilometers – 2 kilometers
= 3 kilometers

Question 5.
A boy has to cover a distance of 20 km. If he has covered 12 km on foot and 4 km on bicycle, then what is the remaining distance left to be covered?
Solution :
Distance covered on foot = 12 kilometers
Distance covered by bicycle = 4 kilometers
Total distance covered
= 12 + 4 = 16 kilometers
Remaining distance to destination
= Total distance – Distance covered
= 20 kilometers – 16 kilometers
= 4 kilometers

Question 6.
The length of a rope is 120 cm. If 20 cm is cut off from it, then what will be its remaining length?
Solution :
Remaining length
= Total length – Cut length
= 120 centimeters – 20 centimeters
= 100 centimeters

Question 7.
Which object is longer-Table or Bench?
Solution :
The length of the bench is greater than the length of the table.

Question 8.
Which object is longer-Eraser or Scale?
Solution :
The length of the scale is greater than the length of the eraser.

Question 9.
Which number is greater among 456 and 457 ?
Solution :
456 + 1 = 457, therefore 457 is the larger number.

Question 10.
Which number is smaller among 123 and 124 ?
Solution :
124 – 1 = 123, therefore 123 is the smaller number.

Question 11.
Which number among 999 and 100 is the largest three-digit number?
Solution :
Both 999 and 100 are three-digit numbers. In 999, the digits in hundreds, tens and ones places are large, therefore it is the larger number.

Question 12.
A box weighs 10 kg . If items of 3 kg weight is taken out from it, what will be its remaining weight?
Solution :
Weight of box = 10 kilograms
Items removed = 3 kilograms
Remaining weight = 7 kilograms

Question 13.
If the length of a room is equal to 30 foot-steps, then what will be the length of two rooms?
Solution :
Length of one room = 30 steps
Length of two rooms = 2 × 30 steps
= 60 steps

Question 14.
A bus departs from Udaipur at 8.00 am reaches Dungarpur at 10 am. How much time does the bus take to reach Dungarpur?
Solution :
10 o’clock to 8 o’clock = 2 hours
Therefore, it takes 2 hours for the bus to reach Dungarpur.

Question 15.
The length of a garden is 3 meters. What will be its length in centimeters?
Solution :
1 meter = 100 centimeters
Therefore, 3 meters = 3 × 100
= 300 centimeters
Therefore, the lenght of the garden is 300 centimeters.

Question 16.
The length of a road is 10 meters. What will be its length in centimeters?
Solution :
1 meter = 100 centimeters
10 meters = 10 × 100
= 1000 centimeters
Therefore, the length of the road is 1000 centimeters.

Question 17.
The length of a wall is 400 cm . What will be its length in meters?
Solution : 100 centimeters = 1 meter
400 centimeters = \(\frac{400}{100}\) meters
= 4 meters

Question 18.
How many needles are there in a clock?
Solution :
A clock has three needles; hour, minute and second.

Question 19.
Which needle on a clock moves the slowest and what does it represent?
Solution :
The hour needle moves the slowest. It tells what time it is.

Question 20.
What does the big needle on a clock indicate?
Solution :
The big needle in the clock tells the seconds.

Question 21.
Tell the time-

Solution :

1. Three thirty
2. Half past one or one thirty
3. Eight and a half

Question 22.
Look at the calendar and tell-
(i) How many Sundays are there in the month of August?
(ii) Do all the months have 31 days?
Solution :
(i) 5
(ii) No

Question 23.
Solve-
(i) What number will we get by doing Eknunen of 7?
Solution :
Eknunen of 7 = 7 = 7 – 1 = 6

(ii) Which new number will we get by doing Ekadhiken Purvena of digit 6 in number 26?
Solution :
Ekadhiken Purven of digit 6 in number 26 = 26 = 36

(iii) What new number will we get by doing “Eknunen Purvena” of digit 8 in number 48?
Solution :
Eknunen Purven of digit 8 in number 48 = 48 = 38

(iv) What number will we get by doing Ekadhiken of number 8?
Solution :
Ekadhiken of number 8 = 8 = 8 + 1 = 9

(v) What number will we get by doing Ekadhiken of digit 3 in the number 432?
Solution :
Ekadhiken of digit 3 in 432 = 442

(vi) What number will we get by doing Eknunen of digit 7 in the number 576?
Solution :
Eknunen of digit 7 in 576 = 566

Question 24.
Continue the pattern given below-

Solution :