Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 33 ones = _____
- 9 tens = _____
- 2 tens 1 ones = _____
- 1 tens 15 ones = _____
(a)
33 ones
= 33 x 1
= 33
(b)
9 tens
= 9 x 10
= 90
(c)
2 tens 1 ones
= 2 x 10 + 1 x 1
= 20 + 1
= 21
(d)
1 tens 15 ones
= 1 x 10 + 15 x 1
= 10 + 15
= 25
Answer(s): 33, 90, 21, 25