Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 0.3, 0.4)
- 90¢ + _____¢ = $1
- $0.55 + $_____ = $1
- 80¢ + $_____ = $1
- $0.75 + $_____ = $1
(a)
$1 = 100¢
90¢ + _____¢ = $1
90¢ + _____¢ = 100¢
100¢ - 90¢ = 10¢
(b)
$0.55 + $_____ = $1
$1 - $0.55 = $0.45
(c)
$1 = 100¢
80¢ + $_____ = $1
$0.80 + $_____ = $1
$1 - $0.80 = $0.20
(d)
$0.75 + $_____ = $1
$1 - $0.75 = $0.25
Answer(s): 10, 0.45, 0.20, 0.25