Multipling x 1000Multipling x 1000Multipling x 1000Multipling x 1000

Multiplying x 1000If we have : 1000 +1000+1000=………. = 1000 x

31000x4=1000+………+………+………

=………

By the same way: 34x1000=34000

3000

1000 1000 1000

4000

complete:

1. 8x1000=1000x……=………

2. ……x1000=1000x……=70003. 2x3x1000=…….x1000=………

4. 3x……x1000=……x1000=90005. 5x……x1000=1000x……=35000

8

7 7

6 60003 97 35

8000

Complete:

1. 20x40=100x……=………

2. 30x50=…….x100=………

3. 6x200=……x100=………

4. ……x100=…….x1000=90005. ……x10=35x100=………

8 80015 150012 1200

90 9

350

3500

As you know ,one kilogram=1000

grams .complete

1. 3 kilograms=………grams because 3x1000=………

2. 14 kilograms=………grams because 14x1000=…………

30003000

140001400

0

Multiplying a 2-digit Multiplying a 2-digit number by a 1-digit number by a 1-digit

numbernumber

Multiplying a 2-digit Multiplying a 2-digit number by a 1-digit number by a 1-digit

numbernumber

Example :

6 2 3 4X 3

11

2071 8129+16+1

Note:The vertical product = the

horizontal product .

6234 x 3 =

20718 121 9+11 6+1

MultiplyMultiply :

2 3 5 6

X 4

9 4 2 4

5 4 2 3

X 8

4 3 3 8 4

Find the product:

325 x 4 = ………

452 x 5 = ………

783 x 2 = ………

1235 x 3 = ………

1432 x 6 = ………

1300

2260

1566

3705

8592

Unit TwoUnit TwoUnit TwoUnit Two

DivisDivisionion

Finding the quotient•Ahmed has 10 rabbits. He

wants to put 2 rabbits in each box.

How many boxes does he need ?

We can divide to find how many We can divide to find how many boxes he needs :boxes he needs :

10 10 ÷÷ 2 2 == 5 5

divisordivisor

dividenddividend

quotientquotient

Note that.. There are three ways to express the

division operation.For example :

To divide 12 by 4 , you can write :

12 12 ÷÷ 4 4 == 3 3

44 1212

33

oror 44

1212= 33

Exercises.. 1. 42 ÷ 6 = ……… (2 , 4 , 6 or 7)

2. 20 ÷ 5 = ……… (4 , 5 , 15 or

25)

3. 56 ÷ 7 = ……… (5 , 6 , 7 or 8)

4. 9 ÷ 9 = ……… (9 , 1 , 0 or 18)

5. (12 ÷ 3) + 1 = ……… (4 , 5 , 3 or 10)