KENDRIYA VIDYALAYA,C.R.P.F, AVADICLASS: V MATHSSTUDY MATERIALS FOR HALF YEARLY EXAMINATION (2017-18)Chapter 1 : The Fish Tale.1. Write the value for the given terms.

10 ones = 1 tens10 tens = 1 hundred10 hundreds = 1 thousand10 thousands = 1 ten thousand10 ten thousands = 1 lakh10 lakhs = 1 ten lakh10 ten lakhs = 1 crore.

2. Write the number names for the following.a. 3,69,748 – Three lakhs sixty nine thousand seven hundred Forty eight.b. 50,43,769 – Fifty lakhs forty three thousand seven hundred sixty nine.c.5,23,409 – Five lakhs twenty three thousand four hundred and nine.d. 79,632 – Seventy nine thousand six hundred and thirty two.e. 76,49,823 – Seventy Six lakhs forty nine thousand eight hundred and twenty three.f. 99999 – Ninety nine thousand nine hundred and ninety nine.g. 98,63,254 – Ninety eight lakhs sixty three thousand two hundred fifty four.3. Write the numerals forms of:1. One lakh sixty two thousand three hundred forty two – 1,62,3422. Thirty five lakhs ninety eight thousand eight hundred and ninety nine – 35,98,8993. Fifty two lakhs forty two thousand fifty five – 52,42,0554. Three crores twenty eight lakhs sixty three thousand two hundred seventy nine – 3,28,63,2795. Five crores twenty three lakhs forty five thousand six hundred and eighty seven – 5,23,45,6876. One crore eighty two lakhs thirty six thousand nine hundred and seventy two – 1,82,36,972.4. Values of the following given numbers.1 crore = 100 lakhs1 lakh = 100 thousands10 lakhs = 1000 thousands

1 thousand = 10 hundreds.5. Make the smallest and greatest five digit number using the given digits.1. 72863: Smallest: 23678 Greatest: 876322. 94523: Smallest: 23459 Greatest: 954323. 96035 Smallest: 30569 Greatest: 965304. 630459 Smallest: 304569 Greatest: 9654305. 47027 Smallest: 20477 Greatest: 77420.6. Solve the following.a) Long boat travel 4 km in one hour. How long will they take to go a distance of 10 km?Ans:One hour = 4 kmTwo hour = 4 + 4 = 8 kmHalf an hour = 4 ÷ 2 = 2 kmTwo and half hour = 8 + 2 = 10 kmb) Motor boats travel faster, at the speed of about 20 km in one hour. How far would the motor boats go in three and a half hourAns:One hour = 20 kmTwo hour = 20 + 20 = 40 kmThree hour = 20 + 20 + 20 = 60 kmHalf an hour = 20 ÷2 = 10Three and half hour = 60 + 10 = 70 kms.c) The fish weighs 8 kg. Fazilla sell the whole for Rs. 1200. At what price per kg did Fazilla sell the kingfish?Ans:Cost of 8 kg of fish = Rs.1200Cost of one kg = 1200 ÷ 8Cost of one kg = Rs. 150d) Floramma has sold 10 kg of prawns today. How much money did she get for that? (Cost of 1kg of prawns = 150)Ans:Cost of 1 kg of prawns = Rs. 150Floramma sold = 10 kgsMoney earned by her = 10 x 150 = Rs. 1500e) The meeting of the Meena Bank has just begun. Fazilla is the President. Twenty Fisher women have made their own bank. Each saves Rs.25 every month and puts it in the bank.

i) How much money does the group collect each month?Ans: There are twenty fisher women

Each saves = Rs. 25Total Saving = 20 x 25 = Rs. 500

ii) How much money will be collected in ten years?Ans:Total saving each month = Rs. 500Every they save = 500 x 12months = Rs.6000For ten years they are saving = Rs.6000 x 10 = Rs. 60000f) Gracy took a loan for Rs.4000 to buy a net. She paid back Rs.345 every month for one year. How much money did she pay back to the bank?Ans:Gracy took a loan = Rs.4000She repaid every month = Rs.345For one year she repaid = 345 x12 She paid to the bank = Rs.4140 g) Jhansi and her sister took a loan of Rs.21000 to buy a log boat. They paid back a total of Rs.23520 in one year. How much did they pay back every month?Ans:Jhansi took a loan = Rs.21000She repaid to bank in one year = Rs.23520Each month she paid = 23520 ÷ 12 = Rs. 1960Each month she paid to the bank = Rs. 1960.Chapter2: Shapes and Angles.General points to be remembered.1. When two rays start from the same end point, they form an angle between them.2. An angle whose measure is less than 90◦ is called an Acute angle.3. An angle whose measure is 90◦ is called a right angle.4. An angle whose measure is more than 90◦ is called an obtuse angle.5. ½ of a right angle = 45◦6. 1/3 of a right angle = 30◦7. 2 times a right angle = 180◦8. ¼ of a straight angle = 45◦9. 3 times of 30◦ is a right angle.

Chapter 3: How many Squares?

1. The length of the boundary is called perimeter. It is the sum of all sides.2. The space within the boundary is called Area.3. Unit of perimeter = m or cm.4. Unit of Area = sq.m or sq.cm

Chapter 4: Parts and WholesA fraction is written as Numerator/ Denominator .Find out the following.1. ½ of 100 = 502. ¼ of 100 = 253. four ¼ make a whole.4. 25 paise is one fourth of a rupee.5. 20 paise is one fifth of a rupee.6. 50 paise is one half of a rupee.Equivalent Fractions.1) ½ = 2/4 2) 1/6 = 2/12 3) 1/7 = 2/144) 2/3 = 4/6 5) 1/9 = 2 / 18 6) 1/5 = 2 / 10Solve the followinga) There are 15 pots. Find 1/3 of itAns:1/3 of 15= 15 ÷ 3 = 5

1/3 of 15 = 5 potsb) Find 1/7 of 56 balls.Ans:1/7 of 56= 56 ÷ 7 = 8 balls1/7 of 56 = 8 balls.c) There are 2000 mangoes in a bag. One-fourth of them is given to Mohan and 1/5 of them is given to Raju. How many mangoes are left?Ans:Total mangoes = 2000Mohan = ¼ of 2000

= 2000 / 4 = 500 mangoesRaju = 1/5 of 2000

= 2000 / 5 = 400 mangoesMangoes left = 2000 – 500 – 400 = 1100 mangoes are left.d) Manju had a chocolate. She gave one-fourth of it to Raji. One-third to Swetha and one-sixth to Sheela. She ate the remaining part. How many pieces of chocolate did each get?

Ans:There are 12 pieces of chocolate totally.Raji Share = ¼ of 12 = 12/4 = 3 piecesSwetha = 1/3 of 12 = 12 /3 = 4 piecesSheela = 1/6 of 12 = 12/6 = 2 piecesManju ate = 12 – 3 – 4 – 2 = 3 pieces.

Chapter 5: Does it look the same.

Chapter 6: Be my multiple I’ll be your factor.Write the multiples for the following.a. Multiples of 2: 2,4,6,8,10,12,14,16,18,20b. Multiples of 3: 3,6,9,12,15,18,21,24,27,30c. Multiples of 4: 4,8,12,16,20,24,28,32,36,40d. Multiples of 5: 5,10,15,20,25,30,35,40,45,50e. Multiples of 6: 6,12,18,24,30,36,42,48,54,60f. Multiples of 7: 7,14,21,28,35,42,49,56,63,70g. Multiples of 8: 8,16,24,32,40,48,56,64,72,80h. Multiples of 9: 9,18,27,36,45,54,63,72,81,90i. Multiples of 10: 10,20,30,40,50,60,70,80,90,100Find the Lowest common factor for the following.a. 2,3,4Ans:Multiples of 2: 2,4,6,8,10,12,14,16,18,20,22,24Multiples of 3: 3,6,9,12,15,18,21,24,27Multiples of 4: 4,8,12,16,20,24,28Common Multiples of 2,3,4: 12, 24Lowest common multiple is 12b. 3 and 5Ans:Multiples of 3: 3,6,9,12,15,18,21,24,27,30Multiples of 5: 5,10,15,20,25,30Common Multiples: 15,30Lowest common Multiple: 15c. 2 and 4Ans:Multiples of 2: 2,4,6,8,10,12,14,16,18,20Multiples of 4: 4,8,12,16,20,24,28,32,36,40Common Multiples: 4, 8, 12, 16, 20Lowest common multiple: 4d. 4 and 5Ans:Multiples of 4: 4,8,12,16,20,24,28,32,36,40Multiples of 5: 5,10,15,20,25,30,35,40,45,50Common Multiple: 20,40Lowest common multiple: 20e. 3 and 9

Ans:Multiple of 3: 3,6,9,12,15,18,21,24,27,30Multiple of 9: 9,18,27,36,45Common Multiple: 9,18,27Lowest Common Multiple: 9Highest Common Factor.a) Find HCF of 24 and 36 Factors of 24: 1,2,3,4,6,12,24 Factors of 36: 1,2,3,4,6,9,12,36 Common Factors: 1,2,3,4,6,12 HCF: 12b) Find HCF of 72 and 81 Factors of 72 = 1,2,3,4,6,8,9,12,18, 24,36 Factors of 81 = 1,3,9,27,81 Common Factors = 1,3,9 HCF = 9c) Find HCF of 25 and 35Factors of 25 = 1,5,25 Factors of 35 = 1,5,7,25 Common Factors = 1,5 HCF = 5

Lesson No: 7 Can you see the pattern.Complete the pattern.1. 12, 22, 32, 42, 52, 622. 1, 4, 9, 16, 23, 323. 450, 400, 350, 300, 250

Also, Please Refer your Class work and Reader.