题目内容
①15.58÷8.2-0.67 ②12.72÷(14.4-9.1)+0.25
③7.6÷(1.3+0.6)×3.2 ④(22.5×6-50)÷2.6.
③7.6÷(1.3+0.6)×3.2 ④(22.5×6-50)÷2.6.
①15.58÷8.2-0.67,
=1.9-0.67,
=1.23;
②12.72÷(14.4-9.1)+0.25,
=12.72÷5.3+0.25,
=2.4+0.25,
=2.65;
③7.6÷(1.3+0.6)×3.2,
=7.6÷1.9×3.2,
=4×3.2,
=12.8;
④(22.5×6-50)÷2.6,
=(135-50)÷2.6,
=85÷2.6,
≈32.69.
=1.9-0.67,
=1.23;
②12.72÷(14.4-9.1)+0.25,
=12.72÷5.3+0.25,
=2.4+0.25,
=2.65;
③7.6÷(1.3+0.6)×3.2,
=7.6÷1.9×3.2,
=4×3.2,
=12.8;
④(22.5×6-50)÷2.6,
=(135-50)÷2.6,
=85÷2.6,
≈32.69.
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