Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 0.3, 0.4)
- 80¢ + _____¢ = $1
- $0.55 + $_____ = $1
- 5¢ + $_____ = $1
- $0.15 + $_____ = $1
(a)
$1 = 100¢
80¢ + _____¢ = $1
80¢ + _____¢ = 100¢
100¢ - 80¢ = 20¢
(b)
$0.55 + $_____ = $1
$1 - $0.55 = $0.45
(c)
$1 = 100¢
5¢ + $_____ = $1
$0.05 + $_____ = $1
$1 - $0.05 = $0.95
(d)
$0.15 + $_____ = $1
$1 - $0.15 = $0.85
Answer(s): 20, 0.45, 0.95, 0.85