Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 15 ones = _____
- 5 tens = _____
- 3 tens 1 ones = _____
- 9 tens 20 ones = _____
(a)
15 ones
= 15 x 1
= 15
(b)
5 tens
= 5 x 10
= 50
(c)
3 tens 1 ones
= 3 x 10 + 1 x 1
= 30 + 1
= 31
(d)
9 tens 20 ones
= 9 x 10 + 20 x 1
= 90 + 20
= 110
Answer(s): 15, 50, 31, 110