Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 90 ones = _____
- 8 tens = _____
- 3 tens 3 ones = _____
- 3 tens 10 ones = _____
(a)
90 ones
= 90 x 1
= 90
(b)
8 tens
= 8 x 10
= 80
(c)
3 tens 3 ones
= 3 x 10 + 3 x 1
= 30 + 3
= 33
(d)
3 tens 10 ones
= 3 x 10 + 10 x 1
= 30 + 10
= 40
Answer(s): 90, 80, 33, 40