Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 tens + 9 = _____
- 2 hundreds + 7 = _____
- 9 hundreds + 3 tens = _____
- 65 tens + 20 tens = _____
(a)
9 tens + 9 = 90 + 9 = 20
(b)
2 hundreds + 7 = 200 + 7 = 207
(c)
9 hundreds + 3 tens = 900 + 30 = 930
(d)
65 tens + 20 tens = 650 + 200 = 850
Answer(s): 99, 207, 930, 850