Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 0.3, 0.4)
- 20¢ + _____¢ = $1
- $0.75 + $_____ = $1
- 20¢ + $_____ = $1
- $0.45 + $_____ = $1
(a)
$1 = 100¢
20¢ + _____¢ = $1
20¢ + _____¢ = 100¢
100¢ - 20¢ = 80¢
(b)
$0.75 + $_____ = $1
$1 - $0.75 = $0.25
(c)
$1 = 100¢
20¢ + $_____ = $1
$0.20 + $_____ = $1
$1 - $0.20 = $0.80
(d)
$0.45 + $_____ = $1
$1 - $0.45 = $0.55
Answer(s): 80, 0.25, 0.80, 0.55