Addition |
Subtraction |
Multiplication |
Division |
Fractions |
Decimals |
Percentages |
Problems |
Books
Maths Trick 3
Try this one in your head, using mental maths...
Step 1
Ask a friend to think of a number between 1 and 10.
Example: 8
Step 2
Get them to double it.
Example: 16
Step 3
Ask them to add 10 to the answer.
Example: 26
Step 4
Then get them to divide by 2.
Example: 13
Step 5
Ask them to tell you what number they now have.
Example: 13
Step 6
You subtract 5 from this and tell them what their original
number was.
Example: 13 - 5 = 8
Note: If you wish to take turns to practice your mental maths, you can also use 2 and 3 digit numbers to make it harder!
Return to previous page? – click here

