Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 tens + 11 = _______
- 2 thousands - 1 = _______
- 9 tens + 2 tens = _______
- 70 tens - 20 tens = _______
(a)
2 tens + 11
= 20 + 11
= 31
(b)
2 thousands - 1
= 2000 - 1
= 1999
(c)
9 tens + 2 tens
= 90 + 20
= 110
(d)
70 tens - 20 tens
= 700 - 200
= 500
Answer(s): 31, 1999, 110, 500