Carregando…
Exemplo 1.63 de Prealgebra, 1.5 Divide Whole Numbers
Problema e solução em inglês, como no livro original.
Divide Check by multiplying.
Resolva no papel primeiro. Depois abra a solução um passo de cada vez e pare assim que conseguir terminar sozinho.
| Let's rewrite the problem to set it up for long division. | |
| First we try to divide 9 into 7. | |
| Since that won't work, we try 9 into 72. There are 8 nines in 72. We write the 8 over the 2. |
|
| Multiply the 8 by 9 and subtract this product from 72. | |
| Now bring down the 6 and repeat these steps. There are 0 nines in 6. Write the 0 over the 6. Multiply the 0 by 9 and subtract this product from 6. |
|
| Now bring down the 3 and repeat these steps. There are 7 nines in 63. Write the 7 over the 3. Multiply the 7 by 9 and subtract this product from 63. |
|
| Check by multiplying. |
It equals the dividend, so our answer is correct.
O Try It do livro logo depois deste exemplo: mesma ideia, outros números. Só a resposta é dada.
Divide. Then check by multiplying:
Como foi?