Math-Magic💫

Hello GREATMINDS💡

So today on MATHSPEDIA A+🧠we shall discuss and focus on 5 more Arithme-tricks😉 on multiplication of some digits

After the lesson if there is a part you don't understand feel free to comment

Fig 1.

So let's begin 

1. Multipy by 5

        -1-

1234×5 = 6170

Step 1- Divide the number by 2

1234/2 =617

Step 2- Multiply the result from Step 1 by 10

617×10 = 6170

Fig 2.

2. Multiply by 6

    -1-

16×6 = 96

6= 5+1= (10/2)+1

Step 1- Divide the number by 2

16/2= 8

Step 2- Multiply the number from Step 1 by 10

8×10 = 80

Step 3- Multiply the number by 1

16×1=16

Step 4- Add Step 2 and 3

80+16 = 96

Fig 3.

3. Multiply by 20

-1-

36×20 = 720

Step 1- Multiply the number by 2

36 × 2= 72

Step 2- Multiply the number from Step 1 by 10

72×10= 720

Fig 4.

4. Multiply by 25

-1-

18×25=450

Step 1- Divide the number by 4

18/4 = 4.5

Step 2- Multiply the number from Step 1 by 100

4.5×100 = 450

Fig 5.

5. Multiply by 50

-1-

18×50 =900

Step 1- Divide the number by 2

18/2= 9

Step 2- Multiply the number from Step 1 by 100

9×100=900

Fig 6.

That's all for the day GREATMINDS💡

Join us next time for more on MATH-TRICKS 😉

 

  Thank you

   Have a nice day