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①31.4×6.2=
②5.04×1.7≈(得数保留两位小数)
③20-16.38=
④53.6+18.24=
⑤16.2×3.8=
⑥13.15-9.5=
①12.8+2.04×4.5
②10.41-1.06-3.94
③4.5×3.6+5.5×3.6
④14.2×9.9+1.42
⑤0.76×101
⑥56.8-(9.5+6.8)
⑦1.25×8.37×0.8
⑧(0.8+0.8)×12.5
⑨7.59+4.34+4.66
3.62×0.58= 36.2×5.8=
0.9×6= 0.59+0.5= 32.5-20.6= 75.5÷100=
300×0.5= 1.4×0.5= 0.125×8= 2.5+1.5=
0.9×9= 60×0.7= 1.5×0.3= 0.65×10=
3700平方米=公顷 3元6角=元
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