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用简便方法计算92×6+×9(920)(16.5×5+7.5×5)÷6(20)3/5÷6[(7/9+1/3)×3/2](9/25)18×(2/3-2/9-5/6)÷2/9(9/2)
题目详情
用简便方法计算
92×6+ ×9 (920) (16.5×5+7.5×5)÷6(20)
3/5 ÷6[( 7/9+ 1/3)× 3/2](9/25 ) 18×( 2/3-2/9 - 5/6)÷ 2/9 ( 9/2)
92×6+ ×9 (920) (16.5×5+7.5×5)÷6(20)
3/5 ÷6[( 7/9+ 1/3)× 3/2](9/25 ) 18×( 2/3-2/9 - 5/6)÷ 2/9 ( 9/2)
▼优质解答
答案和解析
1、92×6+4×92(920)
=92×(6+4)
=92×10
=920
2、(16.5×5+7.5×5)÷6(20)
=5×(16.5+7.5)÷6
=5×24÷6
=5×4
=20
3、3/5 ÷6÷[( 7/9+ 1/3)× 3/2]
=3/5 ÷6÷[7/9×3/2+ 1/3× 3/2]
=3/5÷{6[7/6+1/2]}
=3/5÷{7+3}
=3/5÷10
=3/5×1/10
=3/50
4、18×( 2/3+2/9 - 5/6)÷ 2/9
=(18×2/3+18×2/9-18×5/6)×9/2
=(12+4-15)×9/2
=1×9/2
=9/2
=92×(6+4)
=92×10
=920
2、(16.5×5+7.5×5)÷6(20)
=5×(16.5+7.5)÷6
=5×24÷6
=5×4
=20
3、3/5 ÷6÷[( 7/9+ 1/3)× 3/2]
=3/5 ÷6÷[7/9×3/2+ 1/3× 3/2]
=3/5÷{6[7/6+1/2]}
=3/5÷{7+3}
=3/5÷10
=3/5×1/10
=3/50
4、18×( 2/3+2/9 - 5/6)÷ 2/9
=(18×2/3+18×2/9-18×5/6)×9/2
=(12+4-15)×9/2
=1×9/2
=9/2
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