Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 12 ones = _____
- 5 tens = _____
- 4 tens 9 ones = _____
- 4 tens 20 ones = _____
(a)
12 ones
= 12 x 1
= 12
(b)
5 tens
= 5 x 10
= 50
(c)
4 tens 9 ones
= 4 x 10 + 9 x 1
= 40 + 9
= 49
(d)
4 tens 20 ones
= 4 x 10 + 20 x 1
= 40 + 20
= 60
Answer(s): 12, 50, 49, 60