Multiplying Lower Numbers 65
9 6 × 4 =
–3
–5
Subtract crossways:
6 – 5 = 1
or
4 – 3 = 1
Multiply 1 by our reference number, 9:
1 × 9 = 9
Now multiply the numbers in the circles, and add the result to 9:
3 × 5 = 15
15 + 9 = 24
Th e complete solution looks like this:
9 6 × 4 = 1
–3
–5
9
- 15
24 Answer
It certainly is not a practical way to multiply 6 times 4, but you see
that we can make the formula work if we want to. Let’s try some
more.
Let’s try 8 as a reference number.
8 6 × 4 = 2
–2
–4
16 - 8
24 Answer