Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 tens - 77 = _______
- 4 millions - 2 = _______
- 9 tens - 7 tens = _______
- 90 tens + 80 tens = _______
(a)
3 tens - 77
= 30 - 77
= -47
(b)
4 millions - 2
= 4000000 - 2
= 3999998
(c)
9 tens - 7 tens
= 90 - 70
= 20
(d)
90 tens + 80 tens
= 900 + 800
= 1700
Answer(s): -47, 3999998, 20, 1700