Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 700 + 80 + 9 = _____
- 4000 + 800 + 70 = _____
- 4000 + 900 + 1 = _____
- 2000 + 700 + 10 = _____
(a)
700 + 80 + 9 = 789
(b)
4000 + 800 + 70 = 4870
(c)
4000 + 900 + 1 = 4901
(d)
2000 + 700 + 10 = 2710
Answer(s): 789, 4870, 4901, 2710