Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 77 ones = _____
- 7 tens = _____
- 2 tens 9 ones = _____
- 5 tens 11 ones = _____
(a)
77 ones
= 77 x 1
= 77
(b)
7 tens
= 7 x 10
= 70
(c)
2 tens 9 ones
= 2 x 10 + 9 x 1
= 20 + 9
= 29
(d)
5 tens 11 ones
= 5 x 10 + 11 x 1
= 50 + 11
= 61
Answer(s): 77, 70, 29, 61