Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 800 + 80 + 7 = _____
- 4000 + 400 + 70 = _____
- 7000 + 500 + 4 = _____
- 5000 + 600 + 40 = _____
(a)
800 + 80 + 7 = 887
(b)
4000 + 400 + 70 = 4470
(c)
7000 + 500 + 4 = 7504
(d)
5000 + 600 + 40 = 5640
Answer(s): 887, 4470, 7504, 5640