计算.①32×18+3060÷36②3014-25.7-4.3③2.75+345+10.2+114④7.8×3.4+745+7.8×535⑤12×(14+16-13)⑥[(4-11315)÷1.2+1

题目简介

计算.①32×18+3060÷36②3014-25.7-4.3③2.75+345+10.2+114④7.8×3.4+745+7.8×535⑤12×(14+16-13)⑥[(4-11315)÷1.2+1

题目详情

计算.
①32×18+3060÷36
②30
1
4
-25.7-4.3
③2.75+3
4
5
+10.2+1
1
4
④7.8×3.4+7
4
5
+7.8×5
3
5
⑤12×(
1
4
+
1
6
-
1
3
⑥[(4-1
13
15
)÷1.2+1
1
3
]÷2
1
3
题型:解答题难度:中档来源:不详

答案

①32×18+3060÷36
=576+85,
=661;

②30class="stub"1
4
-25.7-4.3

=30class="stub"1
4
-(25.7+4.3),
=30class="stub"1
4
-30,
=class="stub"1
4


③2.75+3class="stub"4
5
+10.2+1class="stub"1
4

=2.75+3.8+10.2+1.25,
=(2.75+1.25)+(3.8+10.2),
=4+14,
=18;

④7.8×3.4+7class="stub"4
5
+7.8×5class="stub"3
5

=7.8×3.4+7.8+7.8×5.6,
=7.8×(3.4+5.6+1),
=7.8×10,
=78;

⑤12×(class="stub"1
4
+class="stub"1
6
-class="stub"1
3

=12×class="stub"1
4
+12×class="stub"1
6
+12×class="stub"1
3

=3+2+4,
=9;

⑥[(4-1class="stub"13
15
)÷1.2+1class="stub"1
3
]÷2class="stub"1
3

=[class="stub"32
15
÷class="stub"6
5
+class="stub"4
3
]÷class="stub"7
3

=[class="stub"32
15
×class="stub"5
6
+class="stub"4
3
class="stub"3
7

=[class="stub"16
9
+class="stub"12
9
class="stub"3
7

=class="stub"28
9
×class="stub"3
7

=class="stub"4
3

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