Mental Math Kids Can't Resist!: Tips, Short-cut... Info

It’s great for any problem involving a 5 or an even number. 4. "Front-End" Addition

This is how our brains naturally read, so it feels more intuitive than the "stacking" method. 5. Squaring Numbers Ending in 5 This one makes kids look like absolute geniuses. The Trick: To square a number like 25, 35, or 75: The answer always ends in 25. Mental Math Kids Can't Resist!: Tips, Short-cut...

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 It’s great for any problem involving a 5 or an even number

Give the kid the "trick" and give yourself a calculator. Race to see who gets the answer first. (Let them win!) split the digits