无
*注意事项:
1.2×23.4= 12×23.4= 0.12×2.34=
2.1×1.022.1 8.9 8.9×0.98
3.8×199 3.8×200-3.8 0.875×2.4 87.5×0.24
(3.5+2.5)×=3.5×+×4
4.87×99=4.87×(-)
9-0.36=
1.5×6=
0.5×40=
0.063×100=
2.76+3.5=
0.75×4=
1.25×0.8=
0.25×2=
5.08×2.6= ☆2.32×7.5= 1.05×1.6≈(得数保留一位小数)
8.4×0.6+9.4
32×1.25×0.25
3.75×10.2
3.9×8.2+1.8×3.9
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