Continued from page 1
#4 Add
single digits on either side of
colon, and multiply
results:
1 + 5 = 6 and 3 + 8 = 11 6 x 11 = 66
#5 Subtract
single digits on either side of
colon, and multiply
results:
1 from 5 = 4 3 from 8 = 5 4 x 5 = 20
#6 Multiply
single digits on either side of
colon, and multiply
results:
1 x 5 = 5 and 3 x 8 = 24 5 x 24 = 120
#7 Add
two-digit numbers either side of
colon:
Add 15 to 38 to get 53
#8 Subtract
two-digit numbers either side of
colon:
Subtract 15 from 38 to get 23
#9 Divide
two-digit numbers either side of
colon:
Divide 15 into 38 to get 2 remainder 8
#10 Feeling brave? Multiply
two-digit numbers either side of
colon:
Multiply 15 by 38 to get... 570
You can repeat
above exercises as many times a day as you like.
Try them anytime you have a spare minute, like when you're placed on hold in a telephone queue.
You may not turn into a mathematical genius, but you'll certainly keep your brain in gear!

Murdo Macleod is co-author of the popular "Fun With Figures" mental math course, which shows anyone aged between 8 and 80 the easy way to do impressive mental calculations. Visit the website today for more details at: http://www.FunWithFigures.com