Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- _____ - 88 = 99
- _____ - 63 = 13
- _____ - 21 = 15
- _____ - 35 = 31
(a)
88 + 99 = 187
(b)
63 + 13 = 76
(c)
21 + 15 = 36
(d)
35 + 31 = 66
Answer(s): 187, 76, 36, 66