计算
0.9−0.4=
0.5×0.3=
0.24×3=
3.6−1.2=
0.8×0.6=
0.4×0.6=
5.8−2.4=
1.5×0.4=
0.7+2.3=
7.5−3.6=
3.2×0.5=
4.4−2.5=
6.4−2.8=
4.1×0.2=
0.8×3.5=
1.4+0.8=
0.25×4=
1.2×0.5=
0.9+0.7=
5.5×0.1=
3.5×0.2=
4.2+2.9=
3.6×0.4=
6.4+3.8=
0.45+0.55=
0.15×2=
0.125×8=
2.7+3.5=
6.5×0.2=
4.5×2=
0.25+4=
1.25×4=
4.3−0.8=
3.6−0.9=
0.5×0.2=
0.25×2=

0.9−0.4=0.5
0.5×0.3=0.15
0.24×3=0.72
3.6−1.2=2.4
0.8×0.6=0.48
0.4×0.6=0.24
5.8−2.4=3.4
1.5×0.4=0.6
0.7+2.3=3
7.5−3.6=3.9
3.2×0.5=1.6
4.4−2.5=1.9
6.4−2.8=3.6
4.1×0.2=0.82
0.8×3.5=2.8
1.4+0.8=2.2
0.25×4=1
1.2×0.5=0.6
0.9+0.7=1.6
5.5×0.1=0.55
3.5×0.2=0.7
4.2+2.9=7.1
3.6×0.4=1.44
6.4+3.8=10.2
0.45+0.55=1
0.15×2=0.3
0.125×8=1
2.7+3.5=6.2
6.5×0.2=1.3
4.5×2=9
0.25+4=4.25
1.25×4=5
4.3−0.8=3.5
3.6−0.9=2.7
0.5×0.2=0.1
0.25×2=0.5

把得数相等的算式用线连起来

$2.5×2+7.5×2$ —— $(2.5+7.5)×2$
$7.5×3.6×4$ —— $7.5×4×3.6$
$18.9-(7.8+2.2)$ —— $18.9-7.8-2.2$
$2.5×3+2.5×6$ —— $9×3.1-9×0.6$
$3.14×(4+8)$ —— $3.14×4+3.14×8$
$3.14×4+4×2$ —— $5.14×4$
$4.2×7.5+4.2$ —— $4.2×5+4.2×3.5$