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有理数混合运算 ( 二 )

有理数的混合运算 ( 二 ). 有理数混合运算 ( 二 ). HGR. 试一试. 说明. 找错 , 并把正确的答案写在横线上. ______________________________________________________________. ___________________________________________________________________.

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有理数混合运算 ( 二 )

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  1. 有理数的混合运算(二) 有理数混合运算(二) • HGR

  2. 试一试 说明

  3. 找错,并把正确的答案写在横线上. ______________________________________________________________ ___________________________________________________________________

  4. __________________________________________________________________________________________________________________________ _______

  5. ____________________________________________________________________________________________________________________________

  6. 例３：计算 答案:113 ,

  7. 例４：计算

  8. 练习:

  9. 小结与思考 • 这节课你的收获有哪些? • 1 .要注意运算顺序. • 2 .两步思维,先定符号再定绝对值. • 3 .运算律能使计算简便.

  10. 作业 • 要求:1.蓝水钢笔认真书写,填好日期. • 2.写详细过程. • 63-64页 3,4题 谢谢合作 ！

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