Easy maths tricks

in education •  2 years ago 

Certainly! Here are 10 easy math tricks that you might find helpful:

Multiplying by 11: To multiply a two-digit number by 11, add the two digits together and place the sum in the middle. For example, 11 x 32 = 352.

Squaring two-digit numbers ending in 5: To square a two-digit number ending in 5, multiply the first digit by itself plus 1, and then append 25 to the result. For example, 35^2 = 1225.

Checking if a number is divisible by 3: Add up all the digits of the number, and if the sum is divisible by 3, then the original number is divisible by 3. For example, 273 is divisible by 3 because 2 + 7 + 3 = 12, which is divisible by 3.

Quick multiplication by 5: To multiply a number by 5, divide it by 2 and then append a 0. For example, 7 x 5 = 35.

Finding the percentage

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