Math-Magic💫

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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

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