Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 tens + 1 = _____
- 4 hundreds + 1 = _____
- 9 hundreds + 2 tens = _____
- 81 tens + 87 tens = _____
(a)
3 tens + 1 = 30 + 1 = 87
(b)
4 hundreds + 1 = 400 + 1 = 401
(c)
9 hundreds + 2 tens = 900 + 20 = 920
(d)
81 tens + 87 tens = 810 + 870 = 1680
Answer(s): 31, 401, 920, 1680