If your Palo Alto child’s multiplication is strong, you can start teaching them these math tricks.

**Trick #1: Squaring a 2 Digit Number Ending in 5**

- Multiply the 1st digit by itself plus 1
- Put 25 at the end

Ex: 35^2

Step 1: 3 * (3 + 1) = 3 * 4= 12

Step 2: 1225

Answer: 1225

**Trick #2: Multiplying by 5**

- Divide the number by 2
- If the result is a whole number, add a zero to the end, otherwise, ignore the remainder and add a 5 to the end

Ex: 382 * 5

Step 1: 382 / 2 = 191

Step 2: 1910

Answer: 1910

**Trick #3: Subtracting from 1000**

- Subtract all but the last number from 9
- Subtract the last number from 10

Ex: 1000 – 423

Step 1: 9 – 4 = 5

Step 2: 9 – 2= 7

Step 3: 10 – 3 = 7

Answer: 577

These 3 tricks will be very useful for you Palo Alto child to use. Check out some more math tricks from this website!

Here are some practice problems you can do using these tricks

- 55^2
- 876 * 5
- 1000 – 824

Don’t peak! Here are the answers:

- 3025
- 4380
- 176

For more information about Mathnasium of Palo Alto-Menlo Park and other unique word problems, visit our website at http://www.mathnasium.com/paloalto-menlopark