Page 1 :
3, , Give and Take, , I am Kittu. This is my home. Isn't it huge? It has, 100 rooms. Help me in painting some of the rooms., , I start from room 2. I add 10 to 2 to reach room 12 and paint, it. To add 10 to 2, we can go all the way to the right to 10., Then up to 11, and one step right to 12., This is one way to go from 2 to 12., Is there a shortcut? Of course! Follow me., We can jump up one row., A jump from 2 to 12 is like taking, steps., , 29, , 2021-22

Page 2 :
Now try one jump up from 14., 14 + 10 =, , 24, , ., , Colour this room., How will I go from 22 to 41? Jump from, 22 to 42., Then one step left. We can write it like this., 22 + 20 = 42, 42 – 1 = 41, How many steps did I go in all?, You could also go this way:, From 22 take one step left to 21., Then two jumps up to 41., 22 – 1 = 21, 21 + 20 = 41, Find My Food, Try these on Kittu's home:, Hey! I have something more interesting for you., Ma told me, there are sweets to eat in some rooms., Help me find that room. The answers from the next page will, help you find that room. Mark them in my home., ., , a), , 10 less than 34 is, , b), , 53 – 20 =, , c), , 11 more than 31 is, , ., , The 10×10 number grid is a useful aid for adding and subtracting two-digit numbers. Children, should be encouraged to try these operations mentally using the grid as often as possible., , 30, , 2021-22

Page 3 :
d), , 11 less than 66 is, , ., , e), , 62 + 13 =, , f), , 23 less than 89 is, , ., , g), , 10 and 40 more is, , ., , h), , 9 added to 28 gives, , i), , The sum of 9 and 44 is, , j), , Reducing 98 by 34 gives, , k), , 4 and 37 more is, , l), , Take 35 away from 83. We get, , ., ., ., ., , 31, , 2021-22, , .

Page 4 :
E.g.,, , 47, , = 37 + 10, Is there a, shortcut to, do this?, , 37 + 9 =, , Will it be easier, to go to 46 + 20, first?, , 65 – 30 =, , = 46 + 21, , Similarly how, will you do this?, , = 87 – 30, , 66 –, , = 11, , 36 =, , + 9, , 45 +, , = 99, , 40 +, , = 76, , + 26 = 75, , 98 =, , + 50, , – 21 = 35, , 57 –, , = 20, , 32, , 2021-22

Page 5 :
Adding Made Easy, Anisha bought apples for 37, rupees. Raja bought bananas, for 21 rupees. The woman, selling fruits said:, 37 is 30 and 7, 21 is 20 and 1, So 37 and 21 make 58., The first two,, I can do., , How did she, add 37 and 21, so fast?, , Let us also try. Look at this sum., 26, , +, , 43, , 20 + 6 + 40 + 3, , We break 26 into 20 + 6, and 43 into 40 + 3., , 20 + 40 + 6 + 3, 60, , +, , Then it's easy:, we add 20 + 40 and, 3+6!, , 9, , 69, The answer is 69., , 33, , 2021-22

Page 6 :
17, , –7, , 16, , 18, , 19, , 20, , 21, , 22, , 24, , 23, , 25, , +35, , 26, , 27, , 28, , 29, , Can you do it another way? Say how., , 15, , 33, , +, , 56, , =, , 30, , +, , 3, , +, , 50, , =, , 80, , +, , 3, , +, , 6, , =, , 80, , +, , 9, , =, , 89, , +, , 6, , +, , 2, , 14, 13, 12, 11, , See if you can do the same with these sums., , 10, , 37, , +10, , +, , 22, , 9, , =, , 30, , +, , 7, , +, , =, , +, , +, , =, , +, , =, , =, , +, , +, , =, , +, , +, , =, , +, , =, , 20, , 8, 7, 6, , 73, , 5, , +, , 24, , 4, , +, , 3, 2, , MANGO CHILLI GAME, 1, , Roll a pair of dice and move by adding the numbers that come on the top of both the dices., Keep a different coloured button for each player. If you reach a mango you go forward (+)., If you step on a chilli you have to go back (–). See who reaches back home first !, , HOME, , 79, , 78, , 77, , 76, , 75, , –50, 34, , 2021-22, , 74, , 73, , 72, , 71, , +5, , 70

Page 7 :
30, , 31, , –9, , 32, , 33, , 35, , 34, , –14, , 36, , 37, , 38, , 39, , 40, , +12, 41, , 56 + 21, , =, , +, , +, , +, 42, , =, , +, , +, , 43, 44, , =, , +, , =, 45, 46, , 56 + 21 = 56 + 20 + 1, , 47, = 57 + 20, = 77, Aha!, I can do it this way also!, , –8, 48, 49, 50, , Now work out the steps in your mind., Write the answers directly in the boxes., 33 + 42 =, , = 33 + 27, , 51, , 55 + 25 =, , 52, 53, , 19 + 61 =, , = 48 + 42, , = 34 + 63, , 67 + 25 =, , = 53 + 64, , 72 + 56 =, , 54, , +15, 55, , 69, , 68, , 67, , 66, , –13, , 65, , 64, , 63, , 35, , 2021-22, , 62, , 61, , 60, , 59, , 58 57, , 56

Page 8 :
Let Me Tell You a Story.........., Once a baby lion lost his way in the jungle. He started crying, and called out for his mother. An old deer took pity on him. He, took him to his place. But the other deer got really scared. So, did their other friends — rabbits, squirrels and birds. A lion, among us! Oh, no! He will eat up our babies. The old deer, said — don't worry. I will warn him about this. In the morning, the baby lion thanked every one and started to leave. But a, rabbit said — wait, he cannot go like this! Let us count to see if, he has done any mischief. We should be 240 in all. Let's count., , Tillu counted rabbits and deer., There were 27, , and 48, , The old deer counted birds and squirrels., There were 124, , and 38, , In the chapter Fun with Numbers, children would have made token cards. The same token cards, should be used for exercises in addition before children do written sums., , 36, , 2021-22

Page 9 :
Let's add and find out how many deer and rabbits were, there..., , Number of, Number of, , Putting all the, we get fifteen, Ten, , s together,, s, , s make one, , we are left with five, , and, s, , Now putting together all the, we get seven, So total number of, , 37, , 2021-22, , s, and, , = 75, , s,

Page 10 :
Similarly we add the number of birds and number of, squirrels., Putting all the, , s together, , first and grouping them, , Number of, Number of, Then putting together, the, , s and lastly the, s we get, , So together birds and squirrels were 162,, and deer and rabbits were 75., The old deer said — we were 240 in number, now how many are, we in all?, Can you guess now,, if the baby lion will go back home?, Has the baby lion eaten up any animal?, , To find out, do the addition in the box below:, , Number of, Number of, , and, and, , 38, , 2021-22

Page 11 :
How Many Bulbs?, 1. A factory made 270 bulbs on the first day., On the second day it made 123 bulbs., How many bulbs did the factory make altogether?, , First day - 270 bulbs, Second day - 123 bulbs, , How many, altogether?, , Solution:, , Bulbs made, on first day, Bulbs made on, second day, Sum, , 39, , 2021-22, , 270 + 123, Is the sum more than, 350, or less than 350?, I think.., 270 and 100 is 370?, The sum is more than, 350.

Page 12 :
2. A shopkeeper Rafi had 153 candles. Paras gave him 237, more candles. How many candles does Rafi have now?, , 237 + 153 = ?, Is the sum more than 400, or less than 400?, , Solution:, , Sum, , Work out the following story problems in the same way., Read each problem and say it in your words., Guess the answer before writing it., A. A train compartment is carrying 132 people. Another, compartment is carrying 129 people. In all, how many people, are there in both the compartments?, , 40, , 2021-22

Page 13 :
B. Shanu found 138 pebbles., Karim found 44 pebbles., How many pebbles did they find, in all?, , C. A teacher kept a record of, the fruits students like. This is, what she found:, , Find out:, (a) How many students in the school like oranges?, (b) How many students in the school like mangoes?, (c) Altogether, how many students are there in the school?, (d) Is the number of girls more than 350 or less than 350?, , 41, , 2021-22

Page 14 :
20 + 11, , 9 - 13, , 3 + 16, , 5 - 10, , Practice Time, A. (i) 345 + 52, , (iv) 643 + 345, , (ii) 492 + 29, , (v) 750 + 219, , (iii) 245 + 93, 319, , 304, , 363, , + 323, , + 406, , + 456, , 427, , 684, , + 248, , + 232, , 3-6, , 7-3, , 7-6, , B., , zzle, , Pu, , 8 + 10, , Addition is my best friend, We never have a fight, When I am done, Call out to him, And check if I am right, , MIND BUS GAME :, Mind train game, , Two friends play this game. You look at the bus. Some people come in (+) and, some leave (–) at each bus stop. How many are there in all? Solve in your MIND!, Discuss your answer. The friend who gets the right answer first wins some, points. List down your points. Add to find who wins the most!, , 42, , 2021-22

Page 15 :
19 - 5, , 6 - 15, , 7-3, 6, 10, , Work out four different ways to write the numbers., , box, you will always get 59., , 4 + 20, , If you add all the numbers in the first, , 1 - 7, 5-4, , zzle?, , Can You Solve this Pu, , Write the numbers 1, 2, 3,, 4, 5, 6 in the circles, so that, the sum of the numbers on, each side of the figure is 12., , 20 - 17, , 19 - 3, , 9 + 12, 43, , 2021-22, , 20 - 9

Page 16 :
Find Mithoo's Bag, Do all the sums mentally:, , a) 75 + 20 =, , 95, , g) 670 + 120 =, , b) 90 + 60 =, , 150, , h) 380 + 210 =, , c), , 25 + 30 + 3 =, , i), , 205 + 650 =, , d) 9 + 40 + 31 =, , j), , 128 + 600 =, , e), , 500 + 200 =, , k) 150 + 69 =, , f), , 400 + 350 =, , l ) 37 + 46 + 3 =, , Find Mithoo's bag, and check your, answers., Draw a line, through the, numbers which, are answers, written in the, boxes above., , 44, , 2021-22

Page 17 :
Card Game, One day Bubbly and Gopu were playing. Bubbly gave three, number cards to Gopu. He arranged the cards in two ways., , Can you arrange these cards, other than these two ways?, , Bubbly arranged, them this way:, Isn't it interesting?, , You can also play it. Here are the cards for you. Work out the, combination. Place the cards in the right boxes., , a), , b), , 50, , 30, , 70, , 42, , 50, , 20, , 45, , 2021-22, , 70, , _, , =, , _, , =, , 30, , 12, , 20, , 42, , 12, , _, , =, , _, , =