Take the first digit and multiply it by the "next" number up. 65 x 65 The end is 25 . The first digit is 6. The next number up is 7. Put them together: 4,225 . How to Make it "Irresistible"
It’s great for any problem involving a 5 or an even number. 4. "Front-End" Addition Mental Math Kids Can't Resist!: Tips, Short-cut...
This is a lifesaver for multiplication tables that haven't been memorized yet. It simplifies complex problems into manageable ones. Take the first digit and multiply it by the "next" number up
Take the two-digit number, split the digits, and put their sum in the middle. Example: 35 x 11 Split the 3 and the 5: 3 _ 5 Sandwich the 8 in the middle: 385 The next number up is 7
Most kids struggle with numbers that require "carrying" or "borrowing." Friendly numbers make those problems disappear.
This is arguably the coolest-looking trick in mental math. It works for any two-digit number multiplied by 11.
If the middle sum is 10 or more (like 87 x 11), just carry the "1" to the first digit! 3. The "Doubling and Halving" Method