Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 11 ones = _____
- 9 tens = _____
- 2 tens 5 ones = _____
- 4 tens 15 ones = _____
(a)
11 ones
= 11 x 1
= 11
(b)
9 tens
= 9 x 10
= 90
(c)
2 tens 5 ones
= 2 x 10 + 5 x 1
= 20 + 5
= 25
(d)
4 tens 15 ones
= 4 x 10 + 15 x 1
= 40 + 15
= 55
Answer(s): 11, 90, 25, 55