用计算器计算
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用计算器计算. 第 2 课时. 课件设计:肖凡 重庆市渝北区寨坪完全小学校. 显示屏. 开机键. 关机键. 清除数据键. 四则运算键. 数字键. 用计算器计算。. 35627-2948= 56721+4308= 77895-3945= 8657+3299= 67011-8976= 55987+17544= 73800-7889= 36758+28654=. 32679. 61029. 73950. 11956. 73531.

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用计算器计算

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6462872

用计算器计算

第2课时

课件设计:肖凡

重庆市渝北区寨坪完全小学校


6462872

显示屏

开机键

关机键

清除数据键

四则运算键

数字键


6462872

用计算器计算。

35627-2948= 56721+4308=

77895-3945= 8657+3299=

67011-8976= 55987+17544=

73800-7889= 36758+28654=

32679

61029

73950

11956

73531

58035

65412

65911


6462872

用计算器计算。

3

3115

7930+8785-13600= (kg)

答:今年比去年多收梨3115kg。

想一想:

  什么情况下用计算器计算比较快捷?


6462872

用计算器计算。

4251+23096=

86408-51266=

1680+9275-7328=

25736-8690+2673=

27347

35142

3627

19719

15649×9=

78342÷6=

140841

13057


6462872

回家(连线)。


6462872

用计算器计算,并填表。

311650


6462872

用计算器计算。

60378+35001-29300=

33040-2860+5897=

78062-54300+1608=

50321+48000-9900=

10092+8307-9466=

47003-6085+5678=

66079

36077

25370

88421

8933

46596


6462872

珊瑚海比阿拉伯海的面积大约多多少平方千米?

4791000-3862000=929000(km2)

答:珊瑚海比阿拉伯海的面积大约多929000km2。


6462872

通过这节课的学习,你有什么收获?

总结


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