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探索规律

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探索规律 - PowerPoint PPT Presentation


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探索规律. 76÷2 =. A 36 B 38. 69÷3 =. A 32 B 23. 350÷7 =. A 5 B 50. 240÷3 =. A 80 B 90. 540÷6 =. A 80 B 90. 7200÷9 =. A 800 B 8000. 360÷2 =. A 180 B 130. 560÷7 =. A 80 B 90. 66÷6 =. A 11 B 12. 78÷6 =.

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PowerPoint Slideshow about ' 探索规律' - carlos-jimenez


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Presentation Transcript
slide2
76÷2=

A 36

B 38

slide3
69÷3=

A 32

B 23

350 7
350÷7=

A 5

B 50

240 3
240÷3=

A 80

B 90

540 6
540÷6=

A 80

B 90

7200 9
7200÷9=

A 800

B 8000

360 2
360÷2=

A 180

B 130

560 7
560÷7=

A 80

B 90

slide10
66÷6=

A 11

B 12

slide11
78÷6=

A 13

B 14

slide16
某文艺团体为希望工程募捐,组织一场

义演。成人票每人8元,学生票每人4元问:

(1) 40元可以买成人票多少张?

400元、4000元可以买成人票多少张?

(2)40元可以买学生票多少张?

400元、4000元可以买学生票多少张?

slide17
下列说法中正确的是:

A 钱数扩大几倍,购买的张数也扩大相同的倍数。

B 票价不变,钱数扩大几倍,购买的张数也扩大相同的倍数。

slide18
除数不变,被除数扩大(或缩小)几倍,商也扩大(或缩小)几倍。除数不变,被除数扩大(或缩小)几倍,商也扩大(或缩小)几倍。
slide19
算一算,说说下面算式的规律

80

400÷5=

300÷5=

200÷5=

100÷5=

60

40

20

slide20
下列说法中正确的是:

A 被除数不变,除数缩小2倍,商也缩小2倍。

B 被除数不变,除数缩小2倍,商扩大2倍。

C 除数缩小2倍,商扩大2倍。

slide21
下列说法中正确的是:

A 被除数不变,除数扩大2倍,商扩大2倍。

B 被除数不变,除数扩大2倍,商缩小2倍。

C 除数扩大2倍,商缩小2倍。

slide22
被除数不变,除数扩大几倍,商反而缩小几倍。除数缩小几倍,商反而扩大几倍。被除数不变,除数扩大几倍,商反而缩小几倍。除数缩小几倍,商反而扩大几倍。
slide23
学生票价是成人票价的一半,如果买成人票78张所用的钱用来买学生票,能买多少张?学生票价是成人票价的一半,如果买成人票78张所用的钱用来买学生票,能买多少张?

A 780

B 156

C 36

slide24
算一算,说说下面算式的规律

45

360÷8=

360÷6=

360÷4=

360÷2=

60

90

180

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