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加减混合

加减混合. 35-8+20 说一说按什么顺序计算?. 笔算连加连减时应注意什么?. 车上现在有多少人?. 车上原来有67人. 做一做:. 56+34-20 =. 78-24+39 =. 练一练. 星星合唱队原有 52 人,有 9 名同学毕业了,新加入 15 人,合唱队现在有多少人?. 练一练. 星星合唱队原有 52 人,有 9 名同学毕业了,新加入 15 人,合唱队现在有多少人 ?. 填一填. 29. 40. -. 46. 38. +. 53. +. 58. 11. -. 84. 64. 26. 合. .. 62 58

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加减混合

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  1. 加减混合

  2. 35-8+20 说一说按什么顺序计算? 笔算连加连减时应注意什么?

  3. 车上现在有多少人? 车上原来有67人

  4. 做一做: 56+34-20= 78-24+39=

  5. 练一练 星星合唱队原有52人,有9名同学毕业了,新加入15人,合唱队现在有多少人?

  6. 练一练 星星合唱队原有52人,有9名同学毕业了,新加入15人,合唱队现在有多少人?

  7. 填一填 29 40 - 46 38 + 53 + 58 11 - 84 64 26 合

  8. 62 58 4 46 50 1 判一判 90 - 48 +19=71 35+45 - 23=47 62 - 58+46=50 6 5 . 35 45 70 23 47 90 48 52 52 19 71 4 - + . 1 - + 1 8 4 6 - + 5 × × √ 合

  9. 填一填 跳绳比赛 (1)前两次比赛结束时,小聪共跳 下,小明共跳 下,小亮共跳 下。 (2)第三次比赛,小聪跳 下,小明跳 下。 (3)小亮获得第二名,他三次跳的总数可能是多少? 他第三次可能跳了多少下?

  10. 再见!

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