问题
解答题
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答案
①2.5×3.2×1.25,
=2.5×4×0.8×1.25,
=(2.5×4)×(0.8×1.25),
=10×1,
=10;
②6.06-3.5×0.24,
=6.06-0.84,
=5.22;
③60.4-(10+9.6÷0.4),
=60.4-(10+24),
=60.4-34,
=36.4;
④2.3×3.2+2.3×6.8,
=2.3×(3.2+6.8),
=2.3×10,
=23.