脱式计算(能简算的药简算) 15÷[(23+15)×113] 7.05-3.84-0.16 4.3-(35+2.4÷225) 85
脱式计算(能简算的药简算)15÷[(23+15)×113]7.05-3.84-0.164.3-(35+2.4÷225)857+4.1+127+4.94.5÷[(0.5+3...
脱式计算(能简算的药简算) 15÷[(23+15)×113] 7.05-3.84-0.16 4.3-(35+2.4÷225) 857+4.1+127+4.9 4.5÷[(0.5+34)×115].
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(1)
÷[(
+
)×
],
=
÷[
×
],
=
÷
,
=3;
(2)7.05-3.84-0.16,
=7.05-(3.84+0.16),
=7.05-4,
=3.05;
(3)4.3-(
+2.4÷2
),
=4.3-(
+1),
=4.3-1.6,
=2.7;
(4)8
+4.1+1
+4.9,
=(8
+1
)+(4.1+4.9),
=10+9,
=19;
(5)4.5÷[(0.5+
)×1
],
=4.5÷[1.25×1
],
=4.5÷1.5,
=3.
1 |
5 |
2 |
3 |
1 |
5 |
1 |
13 |
=
1 |
5 |
13 |
15 |
1 |
13 |
=
1 |
5 |
1 |
15 |
=3;
(2)7.05-3.84-0.16,
=7.05-(3.84+0.16),
=7.05-4,
=3.05;
(3)4.3-(
3 |
5 |
2 |
5 |
=4.3-(
3 |
5 |
=4.3-1.6,
=2.7;
(4)8
5 |
7 |
2 |
7 |
=(8
5 |
7 |
2 |
7 |
=10+9,
=19;
(5)4.5÷[(0.5+
3 |
4 |
1 |
5 |
=4.5÷[1.25×1
1 |
5 |
=4.5÷1.5,
=3.
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