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13 = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < ...

14 Speed Math for Kids 10 7 × 8 = –3 –2 We now take away crossways: 7 minus 2 or 8 minus 3 is 5. We write 5 after the equals sig ...

Using a Reference Number 15 Using a reference number allows us to calculate problems such as 6 × 7, 6 × 6, 4 × 7 and 4 × 8. Let’ ...

16 Speed Math for Kids You should set out the calculations as shown above until the method is familiar to you. Th en you can sim ...

Using a Reference Number 17 If you take 98 and 98 from 100 you get answers of 2 and 2. Th en take 2 from 98, which gives an answ ...

18 Speed Math for Kids DOUBLE MULTIPLICATION What happens if you don’t know your tables very well? How would you multiply 92 tim ...

Using a Reference Number 19 If we don’t know the answer, we can draw two more circles below 8 and 6 and make another calculation ...

20 Speed Math for Kids With a little practice, you can do these calculations entirely in your head. Note to parents and teachers ...

21 = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < ...

22 Speed Math for Kids +3 +5 10 13 × 15 = As before, we now go crossways. Th irteen plus 5 or 15 plus 3 is 18. We write 18 after ...

Numbers Above the Reference Number 23 Th e numbers in the circles above are plus numbers and the numbers in the circles below ar ...

24 Speed Math for Kids Test you rself Now try these problems by yourself. a) 12 × 15 = f) 12 × 16 = b) 13 × 14 = g) 14 × 14 = c) ...

Numbers Above the Reference Number 25 MULTIPLYING NUMBERS ABOVE 100 We can use our speed math method to multiply numbers above 1 ...

26 Speed Math for Kids Th is is how I would solve this problem in my head: 16 plus 6 (from the second 16) equals 22, times 10 eq ...

Numbers Above the Reference Number 27 Now subtract crossways: 84 minus 12 is 72. (Subtract 10, then 2, to subtract 12.) Multiply ...

28 Speed Math for Kids The answers are: a) 7,482 b) 7,744 c) 7,656 d) 7,480 Combining the methods taught in this book creates en ...

29 = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < > + - = x 0 1 2 3 4 5 6 7 8 9 ( ) % < ...

30 Speed Math for Kids +25 100 97 × 125 = –3 One hundred and twenty-fi ve is 100 plus 25, so we put a plus sign in front of the ...

Multiplying Above & Below the Reference Number 31 A shortcut for subtraction Let’s take a break from this problem for a mome ...

32 Speed Math for Kids easy? Let’s try it. Twelve thousand, two hundred minus 100? Twelve thousand, one hundred. Plus 25? Twelve ...