Maths Std IV Chapter 10

10. Time and Calendar

1. Write the time shown in the given clocks as 'past' or 'to'

2. Write the time shown in the given clocks.

3. Draw the minute hand and the hour hand to show the given time.
(a) quarter past 5     (b) 5 min to 2

4. Write the a.m. or p.m.
(a) quarter to 5 in the morning
(b) 9:50 at night

5. Match the columns
           Column A                                                                Column B
(a) Sneha has her breakfast                                        (i)  4:00 p.m.
(b) Vini goes for morning walk                                     (ii) 6:00 p.m.
(c) Manav goes to play in the evening                        (iii) 8:30 p.m.
(d) Joshi family having dinner                                     (iv) 8:30 a.m.
(e) Renu has evening tea                                            (v) 7:00 a.m.

6. Convert the given 12-hour time to 24-hour time.
(a) 2:19 p.m.   (b) 10:55 a.m.

7. Convert the given 24-hour time to 12-hour time.
(a) 1725 hours   (b) 1100 hours

8. Write the time in 12-hour and 24-hour system.
(a) The flight arrives at 3 o clock midnight.
(b) Our family goes to sleep by half past ten at night

9. Convert the time in hours to minutes.

(a) 3 hours   (b) 5 ½ hours

10. Convert the time minutes to hours.

(a) 140 min  (b) 240 min

11. Add

(a) 2 hours 15 minutes and 3 hours 50 minutes

(b) 4 hours 25 minutes and 4 hours 35 minutes

12. Subtract

(a) 3 h 35 minutes from 8 h 50 minutes

(b) 9 h 55 minutes from 13 h 30 minutes

13. Write the duration of time from:

(a) 6:00 a.m. to 8:45 a.m.

(b) 10:30 hours to 13:30 hours

14. A class test starts at 9:15 a.m.It is of 45 minutes duration. When will it finish?

15. What is the duration of time between 8 p.m. and 6 a.m.?

16. Convert the days to hours.

(a) 1 ½ days    (b) a fortnight(15days)   (c) 3 ¼ days

17. Convert the years to months

(a) 2 ¼ years  (b) 6 years

18. Convert the weeks to days.

(a) 2 ½ weeks   (b) 7 ¼ weeks

19. Read the time shown and answer the questions that follow.

(a) 

(i) Draw the minute hand and the hour hand to represent quarter past 7

(ii) What will be the time after 3 ½ hours?

(iii) What will be the time after 250 minutes?

20. Write true or false.

(a) There are 31 days in the month of July.

(b|) A leap year has 365 days.

(c) The year 1998 was a leap year.

(d) Two days after Tuesday is Thursday.

(e) The date 2 days after Chritsmas is 29 December.

(f) A fortnight has 7 days.

Maths Std IV Chapter 12

12. Basic Geometry

Maths Std IV Chapter 9

9. Measurement

1. Convert and fill in the blanks.
(a) 19km 360m = ____________ m
(b) 94kg = ____________g
(c) 4250mL = ____________L ____________mL

2. Add
(a) 78kg 435g and 34kg
(b) 125km and 68km 50m

3. Subtract
(a) 20L 375mL from 350L 735mL
(b) 820g from 5kg 725g

4. Fill in the blanks.
(a) 12dm = _____________ cm
(b) 725cm = _____________ m _____________cm
(c) 8kL 150L = _____________ L
(d) 5,146 mg = _____________ g _____________ mg
(e) 90cm = _____________dm _____________ cm
(f) 8,075mL = _____________ L _____________ mL

5. Add the lengths
(a) 4m 20cm, 12m 6cm and 18m 50cm
(b) 82km 164m, 97km 80m and 30km
(c) 9 km, 6km 30m and 57km 150m

6. Add the weights.
(a) 4g 60mg, 19g 175mg and 42g 625mg
(b) 64 kg 172 g, 8kg 400g and 215g

7. Add the capacities.
(a) 15kL 160L and 9kL 75L
(b) 34L, 47L 20mL, 5L 160mL

8. Subract.
(a) 6g 720mg from 34g 175mg
(b) 12kg 90g from 73kg 38g

9. Surbhi buys cotton cloth measuring 8m 20cm, terricot cloth measuring  5m 30cm
    and silk cloth measuring 3m. How much cloth does she buy in all.

Maths Std IV Chapter 8

8.Fractions

Maths Std IV Chapter 14

14. Data Handling

1. What is (a) a pictograph?   (b) tally marks

2. The table given below shows the number of various types of fish in an aquarium.

Look at the table and answer the following questions.
(a) How many fish are there in the aquarium?
(b) Which fish is maximum in number and which is the least in number?
(c) How many fish are not angelfish?
(d) Find the total number of oscar fish and loaches.

3. Raghav invited his classmates for his birthday party. He wanted to know what flavour
    of icecream each classmate liked. He collected the following information. Represent
    the given data using tally marks and vertical pictograph. Give it a suitable title and
    also use a suitable picture.

4. Ms. Kapoor wants to select a class monitor from the five nominated names.
    Following are the votes received from the class for the nominees. Draw a vertical
    bar graph to represent the data.

5.  The given horizontal bar graph shows the number of children in a locality who like
     different flavours of juices. Observe it carefully and answer the following questions.
     

(a) Which flavour of juice is liked by most children?
(b) Which flavour of juice is least liked by the
      children?
(c) How many children like mixed fruit juice?
(d) Find the total number of children depicted in
      the bar graph.

Maths Std IV Chapter 7

7. Factors

1. Write properties of
(a) factors  (b) prime numbers   (c) composite number   (d) multiples

2. Fill in the blanks.
(a) The smallest prime number is ________.
(b) A prime number cannot be divided exactly by any other number other than _______
     and itself.
(c) The only even prime number is _______.
(d) ______ and ______ are neither prime nor compostie numbers.
(e) Factorization means writing a number as a ______________ of its factors.
(f) We can write every composite number as a product of factors that are
    ____________ numbers. This is called _____________ factorization.
(g) The biggest factor that is common to all given numbers is called
    ___________________ of the given numbers.
(h) Multiple of a number = __________ x any counting number
(i) The smallest multiple that is common to all given numbers is called the ____________
     of the given numbers.

3. Write two methods of factorization for obtaining prime factors.

4. Write down the factors of the following numbers
    (a) 48    (b) 90

5. Make a factor tree for the following numbers.
    (a) 96    (b) 40

6. Find the common factors of the following numbers.
    (a) 6 and 18      (b) 20, 35 and 60

7. Write the first 100 prime numbers.

8. Write 'true' or 'false'.
    (a) The smallest prime number is 1
    (b) 87 is a prime number
    (c) The smallest factor of every number is 1.

9. Express the following composite numbers as a product of their prime factors.
    Use division method.
    (a) 124   (b) 275

10. Write the difference between multiples and factors.

11. Write the multiples as directed.
(a) First four multiples of 7 _______________.
(b) Fifth multiple of 8 _________________.
(c) Eleventh multiple of 6 _______________.

12. Circle those which are not the multiples of the numbers given in words.
(a) four              8      12      14     16     18     20      22
(b) twelve         26     36       48    17     94     108    121

13. Skip count to complete the following sequence
(a) multiples of 5                   25, 30, 35, _____, _____, _____, _____
(b) multiple of 8                     40, 48, 56, _____, _____, _____, _____
(c) multiples of 13                 26, 39, 52, _____, _____, _____, _____,

14. Find two common multiples of the following numbers.
(a) 5,7        (b) 3, 6, 9

15. Which of the following numbers are divisible by 2?
      (a) 83    (b) 132     (c) 443

16. Which of the following numbers are divisible by 3?
      (a) 317    (b) 442       (c) 906

17. Which of the following numbers are divisible by 5?
      (a) 160    (b) 384    (c) 295

18. Which of the following numbers is divisible by 10?
      (a) 100     (b) 209     (c) 780

19. Find three common multiples of the following numbers.
      (a) 3, 4 and 6      (b) 10, 15 and 20

20. Write first 6 multiples of the following numbers.
      (a) 11    (b) 12

21. Complete the following sequence.
      (a) 18, 22,26, 30, _____, _____, _____,
      (b) 15, 20, _____, _____, _____, 40, _____,

22. Find the following factors.
      (a) Factors of 15 = __________________
           Factors of 36 = __________________
           Common factors of 15 and 36 = __________________

23. Is 246 a multiple of 8?

24. Which of these numbers 84, 215, 306, 825 are divisible by the given numbers?
      (a) 2      (b) 3     (c) 5    (d) 10

25. Express (a) 90    (b) 117 as the product of their prime factors.

26. Write the first five even multiples of 4.

27. Write the first five odd multiples of 11. 

Maths Std IV Chapter 6

6. Division

1. Divide and check your answer.
(a) 2048 by 9   (b) 9023 by 4   (c) 8174 by 31  (d) 9898 by 38

2. Divide using both long and short division method.
(a) 6,873 ÷ 9   (b) 5,486 ÷ 13

3. Divide using cancellation method.
(a) 6,39,000 ÷ 8,000   (b) 7,080 ÷  50

4. Find estimated and actual quotient and remainder of the following. Round off the
    numbers to the nearest 10
(a) 219 ÷ 27   (b) 9,321 ÷ 56

5. Word problems.
(a) Sameer purchased 28 key chains and distributed them equally among 11 friends
     Estimate how many key chains did each friend get.
(b) A baker bakes 876 cookies in a day. He packs them in boxes each of which can
     have 45 cookies. How many boxes will be needed to pack all the cookies?
(c) Frame a word problem for 416 ÷ 13 = ?
(d) A man earns ₹ 12,000 in 10 day. How much will he earn in 18 days?
(e) For school sports day, ₹ 30,000 was collected from 200 students. How much money
     did each student give? If there are 350 students in the school, how much money is
     yet to be collected?

6. Simplify
(a) 3,600 ÷ 90 x 9 + 5 x 24 -120 ÷ 6
(b) 128 ÷ 16 x 5 + 320 x 4 -150 + 280