Multiplying numbers in your head with good speed is important especially if you are now in higher grades. This simple skill can give you a competitive edge over your peers. In this post, we give you a list of tricks that you can use to increase your multiplication speed.
1. Split & Calculate
Split the numbers and calculate.
E.g. 78 x 12
Step 1: Split 78 into 70 & 8, and Split 12 into 10 & 2
Step 2: Now multiply 70 & 8 with 10 each = 700 + 80 = 780
Step 3: Now multiply 70 & 8 with 2 each = 140 + 16 = 156
Step 4: Now add the numbers = 780 + 156 = 936
2. Multiplying by 5
Add 0 to the number and then make it half.
E.g. 37 x 5
Add 0: 370
Make it half: 185
3. Multiplying by 10,100,1000, etc:
Add the number of 0s in 10, 100, 1000, etc.
e.g. 76 x 10 = 760
33 x 100 = 3300
47 x 1000 = 47000
4. Multiplication by 9:
Step 1: Add 0 at the end of the number
Step 2: Subtract the number from itself
e.g. 7 x 9:
Step 1: 7 x 10 = 70
Step 2: 70 – 7 = 63
final answer = 63
e.g. 23 x 9:
Step 1: 23 x 10 = 230
Step 2: 230 – 23 = 207
final answer: 207
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