1樓:夏晨兮
(zhi1)5.4×(86.5-16.25÷0.5),dao=5.4×(86.5-32.5),
=5.4×54,
=291.6;專
(2)3-3 2
×1021
-2 7
,=3-5 7
-2 7
,=3-(5 7
+2 7
),=3-1,
=2;(3)95.6×18+4.4×18,=(95.6+4.4)×
屬18,
=100×18,
=1800;
(4)15
16+(7
16-1 4
)÷1 2
,=15
16+3
16÷1 2
,=15
16+6
16,=2116.
脫式計算(能簡算的要簡算
2樓:手機使用者
(1)zhi2.86×0.25+2.86×0.48=0.715+1.3728
=2.0878;
(dao2)9.5÷
內[(1-0.5)÷0.1]
=9.5÷[0.95÷0.1]
=9.5÷9.5
=1;(3)0.77÷35=0.022;
(4)4×12-3x=42
4×12-3x+3x=42+3x
48=42+3x
3x=48-32
3x=6
x=2.容
脫式計算
3樓:恩恩
(1)265÷5×12
=53×12,內
=636;容
(2)16×13÷8
=208÷8,
=26;
(3)18×53+46
=954+46,
=1000;
(4)6-0.8+4.3
=5.2+4.3,
=9.5;
(5)612÷3-86
=204-86,
=118;
(6)1.7-0.8-0.6
=0.9-0.6,
=0.3.
7脫式計算,能簡算的要簡算,575957脫式計算,能簡算的要簡算
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