Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 20 x 20 = _____
- 400 x 40 = _____
- 4000 x 400 = _____
- 1000 x 7000 = _____
(a)
20 x 20 = 400
(b)
400 x 40 = 16000
(c)
4000 x 400 = 1600000
(d)
1000 x 7000 = 7000000
Answer(s): 400, 16000, 1600000, 7000000