Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 57 ones = _____
- 9 tens = _____
- 4 tens 9 ones = _____
- 2 tens 11 ones = _____
(a)
57 ones
= 57 x 1
= 57
(b)
9 tens
= 9 x 10
= 90
(c)
4 tens 9 ones
= 4 x 10 + 9 x 1
= 40 + 9
= 49
(d)
2 tens 11 ones
= 2 x 10 + 11 x 1
= 20 + 11
= 31
Answer(s): 57, 90, 49, 31