Give and Take

--++

-- ++

++ --

How many more mangoes are there in the first basket ?

236236MangoesMangoes 123123MangoesMangoes

110100

100 10 1

1

111 1 1 1

1 1 1

1 1

10

1010

1010

10

100

100100

100

2 3 6

1 2 3

113 mangoes are more in the first basket.1 1 3

Can You Help Gayathri’s Grand Father ?

Gayatri’s grand father went to fish market. He was having 245 in his purse. He purchased fish for 127. The shopkeeper gave him back 98. Did the shopkeeper give him the right amount ?

MoneyGrandfatherhad

Cost of fish

1

110100

100

100 100

100

10

10 10

1010

10

10

1

1

11 1 1

1

1 11 1

11

2 4 5

1 2 7

We cannot take seven s from five s . So borrow . is Now we have fifteen s and seven s.

1 1

10

10 1 1 1 1 1 11 1 11

100 10 1

100

100

100

100

10

1010

1010

10102 4 5

1 2 7

1

1

1

1 1

1

1

1 11 1

1 11

1

1

1

1 1

1111

1

Can You Help Gayathri’s Grand Father ? cont…..

From fifteen s take away seven s. Only eight s left.

From four s one had already given to s. From remaining three s take away two s. Only one left.

From two s take away one . Only one left.

1

10

100

1 1 1

10 10 1

10 10

10

100 100 100

1

1 1 11

1 1 1 111

11 1 1

111

11 1 1

1 1 111111100

100

100 100

100 10 1

10

10

10

10

10

1

2 4 5

1 2 7

3 15

1 1 8

The shopkeeper had to give Gayathri’s Grand Father 118.Therefore he should give him another 20 more.

100

10 10

Help Anu…..

Anu has subtracted 243 from 384 and she got 141. Is she right ?

384 - 243 141

141+243 384

Check

So Anu is

right !

Check subtraction using addition. :

3 5 6

2 4 7

1 0 9

1 0 9

2 4 7

3 5 6

2 2 1

1 3 9

3 6 0

4 6 8

1 3 9

2 2 1

Wrong Answer Right Answer

Longer Pencil

Asha cooked chapatis in 25minutes. Then he madedaal in 15 minutes. Howmuch time did she take tocook both things?

Price of 1 kilo salt– 16Price of 1 kilo sugar – 35Which one is more costly?How much more does it cost?

Chapatis and Daal

Sugar and Salt

Sugar Salt

Bharath’s pencil is 15 cm long.Rishab’s pencil is 8 cm long. WhosePencil is longer ? How much longer ?

Bharath’a pencil is 7 cm longer than Rishab’s pencil

Sugar costs 19more than salt

She took 40 minutesto cook both

How many Sweaters ?

Deepika sells school sweaters. In two days she sold some red, blue and grey coloured sweaters.

Look at the above table and answer the following:

1. How many grey sweaters did Deepika sell in two days ?

2. How many red and blue sweaters together did she sell on the first day ?

3. How many sweaters in all did she sell on the second day ?

Sree Hari has read 17 books and Atul has read

24 books.Choose the correct word from the box and form a question.

Books they Sree Hari Atul altogether

1. How many __________ book did __________ read than __________ ?

2. How many ____________ did ____________ read _______________ ?

more

more Atul Sree Hari

books they altogether

8 4 2

6

6 7 9

3 1

1 7

3 2

9 4

2 6

6 9 8

4 4

2 3 8

2

6 2

1

2 2 9

2 5

2 4

1 0

Fill in the missing numbers in the coloured boxes.

1 3

1

1

1

8

9

4

60

3

4

4

1

2

3

F A ACTIVITIES

1.Addition without regrouping u sing Abacus.

2.Addition with regrouping.

3.Subtraction without regrouping.

4.Subtraction with regrouping.

5.Solving word problems.

WORK SHEET No. 1

Competency: Understanding Basic Concepts. I.Find the missing numbers:

120 140 160

800 700 600

480 460 440

Competency: Ability to compute .

43

90

56

==

2. Check the subtraction answer using addition: I. Find the answers mentally:

8 5 3

2 5 4

Competency: Problem Solving Ability I. Solve the following: a) Rakhi is 12 years old. Her mother is 38 years old. How much younger is Rakhi than her mother

WORK SHEET No. 2

b) Sachin scored 186 runs in a test cricket match. How many more runs should he make to score a double century?

c) Raju bought a shirt for Rs. 135 and a trouser for Rs.189. how much money did he spend in all?