题目内容
脱式计算
①4.02-3.5+0.98
②3.2×1.4+5.62
③51.8-4.8×(2.03-0.18)
①4.02-3.5+0.98
②3.2×1.4+5.62
③51.8-4.8×(2.03-0.18)
①4.02-3.5+0.98,
=(4.02+0.98)-3.5,
=5-3.5,
=1.5;
②3.2×1.4+5.62,
=4.48+5.62,
=10.1;
③51.8-4.8×(2.03-0.18),
=51.8-4.8×1.85,
=51.8-8.88,
=42.92.
=(4.02+0.98)-3.5,
=5-3.5,
=1.5;
②3.2×1.4+5.62,
=4.48+5.62,
=10.1;
③51.8-4.8×(2.03-0.18),
=51.8-4.8×1.85,
=51.8-8.88,
=42.92.
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