《2025年新思维口算题卡五年级数学下册苏教版》

5. 解方程。
① $x - 0.6x = 24$ ② $8.2×7 + 0.77x = 72.8$ ③ $5x - 4.5×3 = 16.5$ ④ $0.08x÷2 = 3.2$
⑤ $100 + x - 75 = 178$ ⑥ $(x + 1.2)×4 = 13.2$ ⑦ $0.5x + 12.5 = 40$ ⑧ $6(x + 7.2) = 60.6$

答案： 5. ① \(x = 60\) ② \(x = 20\) ③ \(x = 6\) ④ \(x = 80\) ⑤ \(x = 153\) ⑥ \(x = 2.1\) ⑦ \(x = 55\) ⑧ \(x = 2.9\)