Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 13 ones = _____
- 8 tens = _____
- 2 tens 1 ones = _____
- 1 tens 18 ones = _____
(a)
13 ones
= 13 x 1
= 13
(b)
8 tens
= 8 x 10
= 80
(c)
2 tens 1 ones
= 2 x 10 + 1 x 1
= 20 + 1
= 21
(d)
1 tens 18 ones
= 1 x 10 + 18 x 1
= 10 + 18
= 28
Answer(s): 13, 80, 21, 28