Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 83 ones = _____
- 9 tens = _____
- 3 tens 7 ones = _____
- 7 tens 15 ones = _____
(a)
83 ones
= 83 x 1
= 83
(b)
9 tens
= 9 x 10
= 90
(c)
3 tens 7 ones
= 3 x 10 + 7 x 1
= 30 + 7
= 37
(d)
7 tens 15 ones
= 7 x 10 + 15 x 1
= 70 + 15
= 85
Answer(s): 83, 90, 37, 85