小升初英语类数学题专题练习（一）1、 An ant（蚂蚁） covers a distance of 90 metres in 3 hours. The average speed of the ant in decimetres（分米） per minute is____. 2、3、 In a certain town some people were affected by a ’flu’ epidemic（流感）. In the first month 20% of the population contracted the flu whilst 80% were healthy.In the following month 20% of the sick people recovered and 20% of the healthy people contracted the disease.What fraction（分数） of the population is healthy at the end of the second month? 4、Mpho, Barry, Sipho, Erica and Fatima are sitting on a park bench（公园长椅）.Mpho is not sitting on the far right. Barry is not sitting on the far left.Sipho is not sitting at either end（两头）. Erica is sitting to the right of Barry,but not necessarily next to him. Fatima is not sitting next to Sipho.Sipho is not sitting next to Barry.Who is sitting at the far right? 5、Of the 28 T–shirts in a drawer（抽屉）, six are red, five are blue, and the rest are white. If Bob selects T–shirts at random whilst packing for a holiday, what is the least number he must remove from the drawer to be sure that he has three T–shirts of the same colour? 6、 In an alien language（外语）, jalez borg farn means “good maths skills”. Nurf klar borg means “maths in harmony” and darko klar farn means “good in gold”.What is “harmony gold” in this language? 7、 Five children, Amelia, Bongani, Charles, Devine and Edwina, were in theclassroom when one of them broke a window. The teacher asked each of them to make a statement（陈说） about the event, knowing that three of them always lie and two always tell the truth. Their statements were as follows:Amelia: “Charles did not break it, nor did Devine.”Bongani: “I didn’t break it, nor did Devine.”Charles: “I didn’t break it, but Edwina did.”Devine: “Amelia or Edwina broke it.”Edwina: “Charles broke it.”Who broke the window? 8、 Did you know? A palindrome（回文数） is a number which reads the same forwards as backwards e.g. 35453. The year 2023 is an example of a palindromic number. What is the difference between 2023 and the number of the previous palindromic year? 9、If a Åb = a+3×b then the value of 2+2 Å(3 Å5) is____. 10、Two ants start at point A and walk at the same pace. One ant walks around a 3 cm by 3 cm square whilst the other walks around a 6 cm by 3 cmrectangle. What is the minimum distance, in centimetres, any one mustcover before they meet again?小升初英语类数学题专题练习（二）1、Did you know? In the decimal number system (base 10) ten different digits, 0 to 9, are used to write all the numbers. In the binary number system (base 2) two different digits are used, i.e. 0 and 1.Which one of the following numbers is not a valid number in the octal number system (base 8)?A) 128 B) 127 C) 126 D) 125 E) 1242、 The number of diagonals that can be drawn in a regular polygon withtwenty sides (icosagon) is_____.翻译：正20边形旳对角线有几条？ 4、Two numbers are in the ratio 2 : 3. When 4 is added to each number the ratio changes to 5 : 7.The sum（和） of the two original numbers is____.5、 The greatest number of Mondays which can occur in 45 consecutivedays is____翻译：持续45天内，最多有几种星期一？6、 Saul plays a video game in which he scores 4 for a hit and lost 6 for a miss. After 20 rounds his score is 30. The number of times he has missed is____.7、Three girls A, B and C run in a 100 m race. When A finishes, B is 10 mbehind A and when B finishes C is 20 m behind B. How far in metres was C from A when A finished?(Let’s assume all the athletes run at a constant speed)8、The areas of the faces of a rectangular box（长方体盒子） are 84 cm2 , 70 cm2and 30 cm2.The volume of the box in cm3 is____.9、 You have 3 weights（砝码）: 1 kg, 3 kg and 9 kg as well as an equal arm balance（天平）. How many different weight objects can you weigh with these three?[Remember the weights may be placed on either side]小升初英语类数学题专题练习（三）1. Two numbers differ by 57. Their sum is 185. Find the numbers. Choices for the smaller number:54 64 74. 2.A bus went 318 km farther than a car. The car went one third as far as the bus. How far did each vehicle（车辆） travel? Choices for the smaller number: 147 151 159 3.One number is four times another number. The larger number is also 87 more than the smaller number. Find the numbers. Choices for the smaller number: 29 30 33 4. A clown（小丑） weights 60 lb（磅） more than a trapeze artist（空中飞人）. The trapeze artist weighs two thids as much as the clown. How much does each weigh? choices for the weight of the trapeze artist : 110 120 125 5. The U.S. Senate（参议院） has 100 members, all Democrats（民主党人） or Republicans（共和党人）. Recently there were 12 more Democrats than Republicans. How many Senators from each political party were there at that time? Choices for the number of Republicans: 38 42 44 6.The ninth grade class has 17 more girls than boys. there are 431 students in all. how many boys are there? how many girls are there? C。