Exercice 6 Sans effectuer l'opération, détermine le mellleur ordre de grandeur de A dans chaque cas. \( \begin{array}{l}\text { 1. } A=125,17+289,9+25,24 \\ 300 \quad 340 \quad 400 \\ \text { 2. } A=28,97+32,18+31,07+57,8 \\ 140 \quad 150 \quad 160\end{array} \)

Eric walks 2.75 miles to and from work everyday for an entire year. How many miles did he walk?

2rrange the three numbers hown from least to greatest. \[ \frac{2}{5}, \frac{6}{10}, \frac{2}{9} \]

Marie has 231 toothpicks in one box and 175 toothpicks in another box. She uses 319 toothpicks to make a bridge. How many toothpicks does she have left?

2. Invéntate dos situaciones diferentes que se resuelvan con la resta 51 - 24 . Resuelve una por descomposición y otra mediante saltos en la línea numérica.

To paint a house, a painting company charges a flat rate of \( \$ 500 \) for supplies, plus \( \$ 50 \) for each hour of labor. a. How much would the painting company charge to paint a house that needs 20 hours of labor? A house that needs 50 hours?