Transcript 2III maths ch 2

Chapter 2
99
66
55
22
8
10
7
6
3
4 5
2
Radhika, Gauri, Vicky, Indra and Sunil were collecting
Imli (tamarind) seeds.
✤ _________ collected the most seeds.
✤ Sunil will collect
________ more
seeds to be equal to Vicky.
✤ If Radhika gets 6 more seeds, she will
have ___________.
✤ How many children have more than 40
seeds? _________________________
✤ ________needs 3 more seeds to have
50.
✤ Sunil has 2 seeds less than 40 and
_______has 2 seeds more than 40.
47
seeds
38
seeds
Sunil
Radhika
52 seeds
Gauri
Indra
Vicky
Can you tell the total number of seeds collected by Gauri and Indra ?
That is 47 + 52 =99. 99 is the highest two digit number.
When we add 1 to 99 we get 100. 100 is the smallest three digit number.
After 100 comes 101, 102, 103,104 ………and so on.
100
101
102
106
107
108
103
109
104
110
105
111
Number
(in figures )
Number
(in words)
99
Ninety Nine
100
One hundred
101
One hundred one
209
Two hundred nine
399
Three hundred ninety nine
✤
✤
✤
One hundred fifty
Four hundred sixty
Eight hundred eighty three
819
742
253
150
460
399
670
883
✤
Six hundred ninety
540
720
✤
One hundred ninety nine
690
199
820
630
✤
Eight hundred twenty
744
810
45
401
54
555
374
171
261
159
656
140
179
891
16
195
155
410
159
685
454
136
60
74
699
800
445
642
202
943
Find these numbers in the above chart.
One hundred forty
Two hundred two
Two hundred sixty-one
Eight hundred
300 + 70 + 4
600 + 50 + 6
5 + 50 + 100
Fifty-four
Sixty
One hundred ninety-five
Five hundred fifty-five
600 + 40 + 2
100 + 70 + 9
800 + 10
Four hundred forty-five
Sixteen
One hundred fifty-nine
Six hundred eighty-five
600 + 90 + 9
70 + 4
1 + 90 + 80
The children of class III, Gayatri and Shyam are
jumping during their PT period.
100
102
104
106
110
108
Gayatri is jumping 2 steps forward
Gayatri
250
Shyam
252
254
256
258
Shyam is jumping 2 steps backward
112
Gayatri
260
262
Shyam
Ann and Abhi can jump 10 steps.
100
120
130
140
150
160
190
200
Ann
Ann is jumping 10 steps forward
Ann
140
Abhi
110
150
160
170
180
Abhi is jumping 10 steps backward
Abhi
Continue the pattern:
550, 560, 570 ____,___,____ ,_____,____ .
910, 920, 930, 940 ___,___,___,___,____ .
209, 207, 205
___,___,___,___,____ .
401, 402, 403
___,___,___,___,___ .
Hari, the shopkeeper collects money only in
notes ,
notes and
coins. Now find out how people will pay him for what they have taken.
420
143
55
Who am I ?
Match with the number.
(a)
a) I come between 40 and 50 and there is a 5 in my name.
b) I have 9 in my name and am
very close to 90. (b)
C ) If you hit a 4 after me, you score a century. (c)
d) I am equal to 10 notes of 10.
(d)
e) I am century + half century
(e)
f) I am exactly in between 77 and 97. (f)
96
45
150
100
87
89
Sidhu is counting stars with the help of cards. When he counted one star he
kept one 1 card in his pocket. When he had 10 1 cards he changed it
with this card 10
a
. When he had 10 cards like this 10
, he changed with
100 card.
10
1
24
10
10
1
1
1
221
100
100
10
10
1
13
306
100
100
1
100
1
1
1
1
1
1
1
1
Now I will show you a few collection of cards.
And you have to tell me the number of stars counted in each case.
10
10
10
1
1
100
100
100
1
1
100
100
100
100
10
100
100
10
10
33
1
1
1
10
10
304
1
10
422
1
10
1
1
252
FA ACTIVITIES
1.
Quiz on formation of greatest and smallest numbers using 3 given digits.
2.
Quiz – even or odd numbers.
3.
Group even or odd numbers between two given numbers.
4.
Quiz on place value of a digit in a number. Eg; Place value of 3 in 739.
5.
Time bound quiz - show number using place value cards.
WORK SHEET No.1
Competency: Formation of Numbers
1. Fill in the missing numerals
200
205
478
483
765
Competency: Understanding Basic Concepts
1. Write the number names for the following
a) 199 ________________________________________________
b) 213 ________________________________________________
c) 341 ________________________________________________
d) 605 ________________________________________________
Competency: Ability to compute
1. Counting by 2’s write the numbers starting from:
322
414
120
2. Counting by 5’s write the numbers starting from:
634
852
421
770
WORK SHEET No.2
Competency: Problem Solving Ability.
1. Who am I ?
a)My Ones digit is four.
My Tens digit is 3 more than my Ones digit.
I am the number ___________________.
b) My Ones digit is five.
My Tens digit is 2 more than my Ones digit.
My Hundreds digit is 1 less than my Ones digit.
I am the number ___________________ .
2.How many triangles can you find in this figure?
Prepared by
Mrs. Sujatha Subhash
Mrs. Sheena.T.K.
Kendriya vidyalaya,
Kalpetta