下面各題算得對嗎?對的畫“√”,錯的畫“×”,并改正.
(1)4+6×320=10×320=32 ××改正:4+6×320
=4+910
=49104+6×320
=4+910
=4910
(2)56-16×34=23×34=12 ××.改正:56-16×34
=56-18
=172456-16×34
=56-18
=1724.
3
20
3
20
3
2
3
20
=4+
9
10
=4
9
10
3
20
=4+
9
10
=4
9
10
5
6
1
6
3
4
2
3
3
4
1
2
5
6
1
6
3
4
=
5
6
1
8
=
17
24
5
6
1
6
3
4
=
5
6
1
8
=
17
24
【考點】分數的四則混合運算.
【答案】×;4+6×
=4+
=4;×;-×
=-
=
3
20
=4+
9
10
=4
9
10
5
6
1
6
3
4
=
5
6
1
8
=
17
24
【解答】
【點評】
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發(fā)布:2024/7/18 8:0:9組卷:12難度:0.8