Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1423 = 1000 + _______ + 20
- 6525 = 500 + _______ + 20
- 70 - 2 x 6 = _______
- 40 + 7 ÷ 7 = _______
(a)
1423 = 1000 + _______ + 20
1000 + 20 = 1020
1423 - 1020 = 403
(b)
6525 = 500 + _____ + 20
500 + 20 = 520
6525 - 520 = 6005
(c)
70 - 2 x 6
= 70 - 12
= 58
(d)
40 + 7 ÷ 7
= 40 + 1
= 41
Answer(s): 403, 6005, 58, 41