Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 58 ones = _____
- 8 tens = _____
- 2 tens 5 ones = _____
- 1 tens 20 ones = _____
(a)
58 ones
= 58 x 1
= 58
(b)
8 tens
= 8 x 10
= 80
(c)
2 tens 5 ones
= 2 x 10 + 5 x 1
= 20 + 5
= 25
(d)
1 tens 20 ones
= 1 x 10 + 20 x 1
= 10 + 20
= 30
Answer(s): 58, 80, 25, 30