5 Simple Math Hacks That You Should Teach Your Child
By Jasreet Kaur07, Jun 2024 01:30 PMjagranjosh.com
Simple Math Hacks
Simple math tricks can help your child perform better in Math. These hacks can make their calculations quicker and easier. Tap to read simple math hacks you should teach your child.
Multiplying by 15
To multiply a number by 15, multiply it by 10, then add half of the result to reach the final answer. Consider 4 x 15. Multiplying 4 by 10 gives 40, and adding half 20 gives 60.
Multiplying by 11
In order to multiply a two-digit number by 11, add the digits together and place the result between them. For example, 23 × 11 is calculated by adding 2 + 3 to get 5, and placing it between 2 and 3 to get 253.
Multiplying by 5
To quickly multiply any number by 5, divide the number by 2 and then multiply by 10. For instance, 28 × 5 is 28/2 = 14 and 14 × 10 = 140.
Multiplying by 12
You can multiply any number by 12 quickly and effortlessly. Let's try it with 7x12. First, multiply 7 by ten. Then multiply 7 by two. Finally, combine everything together. Example: 7 x 12 7 x 10 = 70, 7 x 2 = 14 so 70 + 14 = 84.
Multiplying by 9 Using Fingers
To multiply any single-digit number by 9, hold out both hands and fold down the finger of the number you're multiplying. For instance, to multiply 6 by 9, fold down your sixth finger. You'll have 5 fingers on the left and 4 fingers on the right, making 54.
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