Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3)
- 31 tens 7 ones = _____
- 86 hundreds 43 ones = _____
- 9 thousands 154 tens = _____
(a)
31 tens 7 ones
= 31 x 10 + 7 x 1
= 310 + 7
= 317
(b)
86 hundreds 43 ones
= 86 x 100 + 43 x 1
= 8600 + 43
= 8643
(c)
9 thousands 154 tens
= 9 x 1000 + 154 x 10
= 9000 + 1540
= 10540
Answer(s): 317, 8643, 10540