2025年知行合暑假衔接计算天天练5升6第4页答案
1 直接写出得数。(每题1分,共20分)
$9.35 + 1.59 = $ $1.12×0.3 = $ $899 - 672 = $ $31.8 - 9.9 = $
$18.7 - 4.6 = $ $0.6×0.75 = $ $68.4 - 27.6 = $ $3.68 + 1.96 = $
$6×0.8 = $ $0.5 + 1÷1 = $ $17 + 6.9 = $ $2.5×4 = $
$16 - 9.9 = $ $1.6×7 = $ $0.25×4 = $ $92.5 + 48.1 = $
$66.5 + 38.2 = $ $29.1 - 15 = $ $4.2 - 1.6 = $ $6.2 - 5.1 = $

答案

10.94  0.336   227   21.9
 14.1   0.45    40.8   5.64
 4.8   1.5     23.9   10
 6.1   11.2    1     140.6
 104.7  14.1    2.6    1.1
2 计算下列各题,能简算的要简算。(每题3分,共18分)
$3.64÷(1.9 - 0.5)$ $63.4÷2.5÷0.4$ $11.5×3.7 - 2.5×3.7 + 3.7$
$1.75÷0.25×6$ $0.92×1.01$ $327×2.8 + 17.3×28$

答案

2.6   63.4    37
 42    0.9292   1400
3 解方程。(每题4分,共12分)
$3x + 2 = 8.6$ $4.2x + 3×1.3 = 16.5$ $4x + 1.6x = 18.48$

答案

解:x = 2.2 解:x = 3 解:x = 3.3