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心算.1.5×3=0.03×5=12×0.003=0.9×7=4×0.08=15×0.004=0.5×6=0.06×3=1.25×8=8×0.9=5×0.005=18×0.002=

题目详情

心算.
1.5×3=
0.03×5=
12×0.003=
0.9×7=
4×0.08=
15×0.004=
0.5×6=
0.06×3=
1.25×8=
8×0.9=
5×0.005=
18×0.002=
▼优质解答
答案和解析
1.5×3=4.5 0.03×5=0.15 12×0.003=0.036
0.9×7=6.3 4×0.08=0.32 15×0.004=0.06
0.5×6=3 0.06×3=0.18 1.25×8=10
8×0.9=7.2 5×0.005=0.025 18×0.002=0.036