Page 2 - PPT-Complements of 100 and 1000using multiples of 10
P. 2
The "complement" is the number which add up
to make 10, 100, 1000.
For example – 6 + 4 = 10,
70 + 30 = 100,
900 + 100 = 1000
Because it is faster to subtract by adding
complements than by performing true
subtraction.
