推荐回答(3个)
一、选择题
1.一个数(0除外),除以1/5,这数就( )
A.扩大4倍 B.增加4倍 C.缩小4倍 D.不变
2.同一地点,早上七点看到太阳升起,再过64小时后( )
A.看到太阳升起 B.看到太阳落下 C.看不到太阳 D.无法确定
3.下面大小比较错误的是( )
A.3吨600千克>3.06吨 B.2个锐角的和<1平角
C.8升<7000立方厘米 D.5.1时=5时6分
4.体育馆在学校北偏东45°的方向上300米处,儿童公园在学校西偏南45°的方向上200米处,那么儿童公园与体育馆相距( )
A.200米 B.300米 C.400米 D.500米
5.一个合数分解质因数为N=a×b×c,它的约数有( )个
A.6 B.7 C.8 D9
6.将一件商品涨价1/5,再打八折出售,问这件商品现价比原价相比( )
A.价格不变 B.价格高 C.价格低 D.无法判断
7.1.50715071……的小数部分的第2017个数字是( )
A.5 B.0 C.7 D.1
8.坡比等于,斜坡的坡角等于( )
A.30° B.45° C.60° D.90°
9.一个圆柱体和一个圆锥体,底面周长的比是2:3,它们的体积比是5:6,圆柱和圆锥高的最简单的整数比是( )
A.5:8 B.8:5 C.15:8 D.8:15
10.甲、乙、丙三位老师共同担任6(2)班的语文、数学、英语、音乐、体育和美术六门课的教学工作,每人教两门,已知(1)英语和数学教师是邻居(2)乙最年轻(3)甲喜欢和体育老师、数学老师交朋友(4)乙、音乐老师,语文老师三人经常去游泳(5)体育老师比语文老师年龄大,他们三人担任的科目分别是什么?(
)
A.甲:英语、美术,乙:数学、体育,丙:语文、音乐
B.甲:语文、英语,乙:数学、美术,丙:音乐、体育
C.甲:音乐、美术,乙:数学、体育,丙:语文、英语
D.甲:语文、美术,乙:数学、英语,丙:体育、音乐
二、填空题
11.最小的三位数减去35,差是____.
12.一个十位数,最高位上的数字既不是质数也不是合数,千万位上的数字是最小的合数,万位上数字是最小的质数,其他各位上的数字都是0,这个数写作____,读作____.
13.一个长6分米,宽4分米,高5分米的长方体盒子,最多能放____个棱长是2分米的正方体木块.
14把甲班人数的1/8调入乙班后,两班人数相等,则原来两班人数之比是____.
15.观察下面三幅图,再装水的杯子中放入大球和小球,请回答:大球的体积是____立方厘米.
三、解答题
16.在方格纸上按以下要求画出图形B、图形C和图形D.
(1)以直线MN为对称轴,作图形A的对称图形,得到图形B.
(2)把图形B向右平移4格,得到图形C.
(3)以O点为中心,把图形C顺时针旋转90°,得到图形D.
17.【回顾】数学活动课上,我们已经知道:“两个偶数的和是一个偶数”.现在我们“用字母表示数”的方法来猃证:
设这两个偶数为2m和2n (其中m、n都是整数),则它们的和为2m+2n=2(m+n),因为m、n都是整数,所以m+n也是整数,那么2(m+n)就是偶数,即两个偶数的和是一个偶数.
你会用这样的方法来说明“两个竒数的和是一个偶数”吗?
18.甲、乙、丙三人环湖跑步锻炼,同时从湖边一固定点出发,乙、丙二人同向,甲与乙.丙反向,在甲第一次遇上乙后1.25分钟第一次遇上丙,再经过3.75分钟第二次遇乙.已知甲速遇乙速的比是3:2,湖的周长是2000米.求甲、乙、丙三人的速度每分钟各是多少米?
先算算666666×333333=?吧这是2007年的一道招教试题。
答案:222221777778
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