题目内容
米是________米的
;________米是
米的
;6小时15分=________时;2
立方分米=________升________毫升.
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分析:(1)单位“1”的
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(2)也就是求
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(2)把6小时15分换算成时数,先把15分换算成时数,用15除以进率60得
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(4)把2
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解答:(1)
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(2)
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(3)6小时15分=6
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(4)2
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故答案为:
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点评:此题考查分数乘除法应用题的基本类型及名数的换算.
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[
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A .![]() |
B .40 |
C .![]() |
D .![]() |
填空
(1)小数部分的位数是无限的小数叫做______.
(2)用字母表示出.乘法的分配律______,梯形的面积公式______.
(3)一个三位小数,四舍五入后的近似数是2.71,这个数最大可能是______,最小是______.
(4)学校为学生编号,设定尾数用1表示女孩,用2表示男孩.9821451表示“1998年入学的二年级(1)班的45号同学是女生.”那么9643372表示的学生是______年入学的,学号是______,性别是______.
(5)X×5用简便的方法表示______,a×23×c可以简便写为______.
(6)一个平行四边形的底是5.5米,高是4米,与它等底等高的三角形的面积是______平方米.
(7)李叔叔每小时加工a个玩具,8小时可以加工______个.
(8)3X+5X=(3+5)?______1.25×a×8=______×______×______
(9)6.3×1.26的积有______位小数,0.232323…可以简写成______.
(10)在2.98、2.981、2.989、2.982中,最大的是______,最小的是______.
(11)蓝天小学全体同学参加公益劳动,各年级捡白色垃圾的情况如下表.
年级 | 一年级 | 二年级 | 三年级 | 四年级 | 五年级 | 六年级 |
垃圾重量/㎏ | 10 | 12 | 18 | 17 | 21 | 30 |