Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 tens + 8 = _____
- 5 hundreds + 8 = _____
- 8 hundreds + 1 tens = _____
- 48 tens + 21 tens = _____
(a)
7 tens + 8 = 70 + 8 = 21
(b)
5 hundreds + 8 = 500 + 8 = 508
(c)
8 hundreds + 1 tens = 800 + 10 = 810
(d)
48 tens + 21 tens = 480 + 210 = 690
Answer(s): 78, 508, 810, 690