Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 79 ones = _____
- 8 tens = _____
- 2 tens 7 ones = _____
- 6 tens 12 ones = _____
(a)
79 ones
= 79 x 1
= 79
(b)
8 tens
= 8 x 10
= 80
(c)
2 tens 7 ones
= 2 x 10 + 7 x 1
= 20 + 7
= 27
(d)
6 tens 12 ones
= 6 x 10 + 12 x 1
= 60 + 12
= 72
Answer(s): 79, 80, 27, 72