Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 0.3, 0.4)
- 90¢ + _____¢ = $1
- $0.45 + $_____ = $1
- 30¢ + $_____ = $1
- $0.85 + $_____ = $1
(a)
$1 = 100¢
90¢ + _____¢ = $1
90¢ + _____¢ = 100¢
100¢ - 90¢ = 10¢
(b)
$0.45 + $_____ = $1
$1 - $0.45 = $0.55
(c)
$1 = 100¢
30¢ + $_____ = $1
$0.30 + $_____ = $1
$1 - $0.30 = $0.70
(d)
$0.85 + $_____ = $1
$1 - $0.85 = $0.15
Answer(s): 10, 0.55, 0.70, 0.15