5 Tricks for Mathematics Here are 10 fast math strategies students (and adults!) can use to do math in their heads. Once these strategies are mastered, students should be able to accurately and confidently solve math problems that they once feared solving. 1. Adding large numbers Adding large numbers just in your head can be difficult. This method shows how to simplify this process by making all the numbers a multiple of 10. Here is an example: 644 + 238 While these numbers are hard to contend with, rounding them up will make them more manageable. So, 644 becomes 650 and 238 becomes 240. Now, add 650 and 240 together. The total is 890. To find the answer to the original equation, it must be determined how much we added to the numbers to round them up. 650 – 644 = 6 and 240 – 238 = 2 Now, add 6 and 2 together for a total of 8 To find the answer to the original equation, 8 must be subtracted from the 890. 890 – 8 = 882 So the answer to 644 +238 is 882. 2. Subtracting from 1,000 Here’s a basic rule to subtract a large number from 1,000: Subtract every number except the last from 9 and subtract the final number from 10 For example: 1,000 – 556 Step 1: Subtract 5 from 9 = 4 Step 2: Subtract 5 from 9 = 4 Step 3: Subtract 6 from 10 = 4 The answer is 444. 3. Multiplying 5 times any number When multiplying the number 5 by an even number, there is a quick way to find the answer. For example, 5 x 4 =
When multiplying an odd number times 5, the formula is a bit different. For instance, consider 5 x 3.
4. Division tricks Here’s a quick way to know when a number can be evenly divided by these certain numbers:
5. Multiplying by 9 This is an easy method that is helpful for multiplying any number by 9. Here is how it works: Let’s use the example of 9 x 3. Step 1: Subtract 1 from the number that is being multiplied by 9. 3 – 1 = 2 The number 2 is the first number in the answer to the equation. Step 2: Subtract that number from the number 9. 9 – 2 = 7 The number 7 is the second number in the answer to the equation. So, 9 x 3 = 27 If you want to learn more tips and tricks then you must join Star Home Tuitions. We provide the Best Maths Tutors in Jalandhar. We have well-educated trainers. Our skilled faculty members help the candidate to reach their goals in a specific period of time with their intense knowledge and expertise in the exam. For more details please log on to our website
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www.startutorials.in Contact: +91-98760-38173/85660-06700. Address: 115-116A second floor 2nd office , Gurjaipal Nagar, Cool Road, New Jawahar Nagar, Jalandhar, Punjab 144001 |