The fast-forward life demands a quick response and many kids find it tough to remember the math principles. Which makes the subject boring and sometimes kids easily refuse to put in any effort.
The math tricks and hacks can be a good resource of amusement and help kids to boost their math skills for better.
#1 Subtracting any 3 digit numbers from 1000
It’s a basic trick and can help you in the long run.
- Select any 3-digit number. Let’s take 496 385
- Now subtract the first digit from 9. : 9 – 3 = 6
- Subtract the second digit from 9. : 9 – 8 = 1
- Finally, subtract the third digit from 10. : 10 – 5 = 5
- The final answer of 1000 – 385 = 615
#2 Calculating the answer to any number multiplied by 11
It’s easy for kids to memorize the multiplication tables up to 10 and it’s easy to get the 11th done quickly too.
- Let’s take the number 35 with 11 to multiple.
- Now separate these digits, 3 and 5 with space.
- Now, make the addition of these two digits in the center, like 3 [3+5 = 8] 5. It’s your answer.
35 x 11 = 385.
#3 Fast multiplication with 15
The single digits may be easy to multiple. But you can do it even with 15. Let’s see how.
- Take a number 89 now multiply it with 15.
- Add a zero to the number, now it’s 890.
- Now divide it by 2.
- Here you got 890 / 2 = 445.
- By adding this answer, this final answer will be 445 + 890 = 1335
#4 A quick multiplication by 9
multiplying any number by 9 is the fastest trick for kids.
- Take a 3 digit number such as 568
- To multiply this with 9, add a 0 at the end and subtract the original digit.
- That makes it 5680 – 568 =5112. That’s the answer.
#5 Any answer would be 37
The coolest math trick can get you the answer 37 every time.
- Pick any 3 digit number with the same digits.
- Such as 444.
- Add the digits such as 4 + 4 + 4 = 12.
- Now divide the original number with this answer. 444/12 = 37.
- It works every single time. Try it by yourself.
#6 The magical number 6174
The number 6174 is termed as having some unique properties.
If you try to subtract a 4 digit number in such a way that you will always get 6174. It’s also known as Kaprekar’s operation.
#7 Making sure that specific digits remain available
It’s an easy mental trick. You have to tell your friends to do some calculations. The answer will only contain the digits 1,2,4,5,7, and 8 in any order.
- Now choose any digit between 1 to 6. Let’s take 4
- Multiply it by 9 so you will get 4 x 9 = 36
- Multiply this answer by 111: 36 x 111 = 3996
- Multiply that answer with 1001: 3996 x 1001 = 3,996,996
- Now divide this answer by 7: 3,996,996 / 7 = 571,428
#8 Adding 2-digit numbers quickly
You can add any two-digit number at lightning speed.
- Let us take 87 + 49.
- Take the second number into tens and units, like this 49 = 40 + 9.
- Complete the tens addition, like 87 + 40 = 127.
- Now add the remaining digit, such as 127 + 9 = 136. That’s your answer.
#9 Finding the square of any number that ends with the digit 5
It’s an easy trick. It can be applied to all the two-digit numbers ending with 5. Let’s find out how.
- Let’s take the number 65 and try to find its square.
- Write the square of 5 which is 25.
- As the first digit in 65 is 6. The number that follows 6 is 7.
- By multiplying 6 and 7 you get the answer, which is 42.
- Write 42 in the prefix of the 25. Here’s your answer 4225.
You can calculate 95, 75, or 45 too. Try them for practice.
#10 Fraction multiplication
Multiplication is just a series of addition.
- Let us take 16 x 12.
- So, 16 = (2 x 8), which makes the problem as 2 x 8 x 12.
- 8 x 12 = 96. Now 96×2 = 96 + 96 = 192.
- Here’s your answer.
These were some simple tips that any student can apply and make the calculations much faster to get better marks in Mathematics. For improved grades, you can book a free session from Catch Them Young Academy. They have an expert faculty and focuses on the implementation of the concepts and assures 100% improvement in academics as well as personality.