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1988 AMC8 #1 · Algebra · ★
The diagram shows part of a scale of a measuring device. The arrow indicates an approximate reading of
图中显示了一个测量设备刻度的一部分。箭头所指的近似读数是

正确答案：D · 分值：1

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1988 AMC8 #2 · Algebra · ★
The product 8×0.25×2×0.125=8\times 0.25\times 2\times 0.125 =
乘积 8×0.25×2×0.125=8\times 0.25\times 2\times 0.125 =

正确答案：C · 分值：1

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1988 AMC8 #4 · Counting, Probability & Statistics · ★★
The figure consists of alternating light and dark squares. The number of dark squares exceeds the number of light squares by
该图形由深浅交替的正方形组成。深色正方形的数量比浅色正方形多

正确答案：B · 分值：1

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1988 AMC8 #5 · Geometry · ★
Problem If ∠CBD\angle CBD is a right angle, then this protractor indicates that the measure of ∠ABC\angle ABC is approximately
如果 ∠CBD\angle CBD 是直角，则该量角器显示 ∠ABC\angle ABC 的近似度数是

正确答案：C · 分值：1

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1988 AMC8 #7 · Algebra · ★
2.46×8.163×(5.17+4.829)2.46\times 8.163\times (5.17+4.829) is closest to
2.46×8.163×(5.17+4.829)2.46\times 8.163\times (5.17+4.829) 最接近

正确答案：B · 分值：1

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1988 AMC8 #8 · Algebra · ★★
Betty used a calculator to find the product 0.075×2.560.075 \times 2.56 . She forgot to enter the decimal points. The calculator showed 19200 . If Betty had entered the decimal points correctly, the answer would have been
Betty 用计算器求乘积 0.075×2.560.075 \times 2.56。她忘记输入小数点。计算器显示 19200。如果 Betty 正确输入了小数点，答案应该是

正确答案：B · 分值：1

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1988 AMC8 #9 · Geometry · ★★
An isosceles triangle is a triangle with two sides of equal length. How many of the five triangles on the square grid below are isosceles?
等腰三角形是有两条边长度相等的三角形。下面方格网格上的五个三角形中有多少个是等腰三角形？

正确答案：D · 分值：1

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1988 AMC8 #10 · Number Theory · ★★
Chris' birthday is on a Thursday this year. What day of the week will it be 60 days after her birthday?
今年 Chris 的生日在周四。她生日后的第 60 天是周几？

正确答案：A · 分值：1

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1988 AMC8 #12 · Algebra · ★★★
Suppose the estimated 20 billion dollar cost to send a person to the planet Mars is shared equally by the 250 million people in the U.S. Then each person's share is
假设送一个人去火星的估计成本为 200 亿美元，由美国 2.5 亿人平均分担。则每人应承担

正确答案：C · 分值：1

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1988 AMC8 #13 · Geometry · ★★★
If rose bushes are spaced about 1 foot apart, approximately how many bushes are needed to surround a circular patio whose radius is 12 feet?
如果玫瑰花丛间距约 1 英尺，环绕一个半径为 12 英尺的圆形露台大约需要多少花丛？

正确答案：D · 分值：1

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1988 AMC8 #14 · Number Theory · ★★★
♢\diamondsuit and Δ\Delta are whole numbers and ♢×Δ=36\diamondsuit \times \Delta =36 . The largest possible value of ♢+Δ\diamondsuit + \Delta is
♢\diamondsuit 和 Δ\Delta 是正整数，且 ♢×Δ=36\diamondsuit \times \Delta =36。♢+Δ\diamondsuit + \Delta 的最大可能值是

正确答案：E · 分值：1

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1988 AMC8 #15 · Algebra · ★★★
The reciprocal of (12+13)\displaystyle \left( \frac{1}{2}+\frac{1}{3}\right) is
(12+13)\displaystyle \left( \frac{1}{2}+\frac{1}{3}\right) 的倒数是

正确答案：C · 分值：1

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1988 AMC8 #16 · Counting, Probability & Statistics · ★★★
Placing no more than one X\text{X} in each small square, what is the greatest number of X\text{X} 's that can be put on the grid shown without getting three X\text{X} 's in a row vertically, horizontally, or diagonally?
每个小方格最多放一个 X\text{X}，在所示网格上最多能放多少个 X\text{X}，使得任意垂直、水平或对角线方向不会出现连续的三个 X\text{X}？

正确答案：E · 分值：1

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1988 AMC8 #17 · Geometry · ★★★
The shaded region formed by the two intersecting perpendicular rectangles, in square units, is
两个垂直相交矩形形成的着色区域面积是多少平方单位？

正确答案：B · 分值：1

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1988 AMC8 #18 · Counting, Probability & Statistics · ★★★
The average weight of 6 boys is 150 pounds and the average weight of 4 girls is 120 pounds. The average weight of the 10 children is
6 个男孩的平均体重是 150 磅，4 个女孩的平均体重是 120 磅。这 10 个孩子的平均体重是

正确答案：C · 分值：1

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1988 AMC8 #19 · Algebra · ★★★
What is the 100th100\text{th} number in the arithmetic sequence: 1,5,9,13,17,21,25,... ?
等差数列 1,5,9,13,17,21,25,... 中的第 100 个数是多少？

正确答案：A · 分值：1

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1988 AMC8 #20 · Algebra · ★★★
Problem The glass gauge on a cylindrical coffee maker shows that there are 45 cups left when the coffee maker is 36% full. How many cups of coffee does it hold when it is full?
一个圆柱形咖啡壶的玻璃刻度显示，当咖啡壶 36% 满时还剩下 45 杯。咖啡壶满的时候能装多少杯咖啡？

正确答案：C · 分值：1

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1988 AMC8 #21 · Counting, Probability & Statistics · ★★★★
A fifth number, nn , is added to the set {3,6,9,10}\{ 3,6,9,10 \} to make the mean of the set of five numbers equal to its median. The number of possible values of nn is
将第五个数 nn 加入集合 {3,6,9,10}\{3,6,9,10\} 中，使得这五个数的平均数等于其中位数。nn 的可能值有多少个？

正确答案：C · 分值：1

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1988 AMC8 #22 · Algebra · ★★★
Tom's Hat Shoppe increased all original prices by 25% . Now the shoppe is having a sale where all prices are 20% off these increased prices. Which statement best describes the sale price of an item?
Tom's Hat Shoppe 将所有原价提高 25%。现在该店正在进行促销，所有价格在提高后的基础上打 20% 折扣。以下哪句话最能描述商品的促销价格？

正确答案：E · 分值：1

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1988 AMC8 #23 · Algebra · ★★★
Maria buys computer disks at a price of 4 for $5 and sells them at a price of 3 for $5 . How many computer disks must she sell in order to make a profit of $100 ?
Maria 以 $5 买 4 张的价格购入计算机磁盘，以 $5 卖 3 张的价格出售。为获得 $100 利润，她必须卖出多少张磁盘？

正确答案：D · 分值：1

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1988 AMC8 #24 · Geometry · ★★★★
The square in the first diagram "rolls" clockwise around the fixed regular hexagon until it reaches the bottom. In which position will the solid triangle be in diagram 4 ?
第一个图中的正方形围绕固定的正六边形顺时针"滚动"，直到到达底部。图 4 中实心三角形将位于哪个位置？

正确答案：A · 分值：1

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1988 AMC8 #25 · Counting, Probability & Statistics · ★★★★
A palindrome is a whole number that reads the same forwards and backwards. If one neglects the colon, certain times displayed on a digital watch are palindromes. Three examples are: 1:011{:}01, 4:444{:}44, and 12:2112{:}21. How many times during a 12-hour period will be palindromes?
回文数是指正读和倒读都相同的整数。如果忽略冒号，数字手表上显示的某些时间是回文数。三个例子是：1:011{:}01、4:444{:}44 和 12:2112{:}21。在 12 小时内，共有多少个时间是回文数？

正确答案：A · 分值：1

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