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用计算器计算

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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  1. 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

  2. 显示屏 开机键 关机键 清除数据键 四则运算键 数字键

  3. 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

  4. 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?

  5. 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

  6. 回家(连线)。

  7. 用计算器计算,并填表。 311650

  8. 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

  9. 珊瑚海比阿拉伯海的面积大约多多少平方千米?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。

  10. 通过这节课的学习,你有什么收获? 总结

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