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脱式计算,能简算的要简算.2.79×4.64+2.79×4.36+2.7945.45÷9÷523+59-23+59.
题目详情
脱式计算,能简算的要简算.
2.79×4.64+2.79×4.36+2.79
45.45÷9÷5
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2.79×4.64+2.79×4.36+2.79
45.45÷9÷5
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▼优质解答
答案和解析
(1)2.79×4.64+2.79×4.36+2.79,
=2.79×(4.64+4.36+1),
=2.79×10, (1)2.79×4.64+2.79×4.36+2.79,
=2.79×(4.64+4.36+1),
=2.79×10, (1)2.79×4.64+2.79×4.36+2.79,
=2.79×(4.64+4.36+1),
=2.79×10, =27.9; =27.9; =27.9;
(2)45.45÷9÷5,
(2)45.45÷9÷5,
(2)45.45÷9÷5, =45.45÷(9×5),
=45.45÷45,
=1.01;
(3)
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10 10 109 9 9.
(1)2.79×4.64+2.79×4.36+2.79, =2.79×(4.64+4.36+1), =2.79×10, | ||
=27.9; | ||
(2)45.45÷9÷5, |
=2.79×(4.64+4.36+1),
=2.79×10,
=2.79×(4.64+4.36+1),
=2.79×10,
=2.79×(4.64+4.36+1),
=2.79×10,
(2)45.45÷9÷5,
(2)45.45÷9÷5,
(2)45.45÷9÷5,
=45.45÷45,
=1.01;
(3)
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