Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 20 ones = _____
- 7 tens = _____
- 2 tens 4 ones = _____
- 7 tens 16 ones = _____
(a)
20 ones
= 20 x 1
= 20
(b)
7 tens
= 7 x 10
= 70
(c)
2 tens 4 ones
= 2 x 10 + 4 x 1
= 20 + 4
= 24
(d)
7 tens 16 ones
= 7 x 10 + 16 x 1
= 70 + 16
= 86
Answer(s): 20, 70, 24, 86