Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 77 ones = _____
- 8 tens = _____
- 2 tens 8 ones = _____
- 7 tens 18 ones = _____
(a)
77 ones
= 77 x 1
= 77
(b)
8 tens
= 8 x 10
= 80
(c)
2 tens 8 ones
= 2 x 10 + 8 x 1
= 20 + 8
= 28
(d)
7 tens 18 ones
= 7 x 10 + 18 x 1
= 70 + 18
= 88
Answer(s): 77, 80, 28, 88