4.何老师要用900元帮学校篮球队购买12个训练用球,飞跃体育用品店有3种不同价格的篮球,请你帮何老师设计至少两种购买方案,并算一算每种方案剩下多少钱?(5分)
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3.在下面点子图上画一个平行四边形和一个梯形,再画出它们的高。(4分)
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1.直接写出下面各题的得数。(6分)
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65÷5= |
13×7= |
54÷3= |
40×15= |
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430+80= |
360÷40= |
125×8= |
490÷7= |
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400÷8= |
1200×40= |
602×39≈ |
397÷21≈ |