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1、During a sale, the price of a book is reduced(减少)by 25%. The sale price is then further(进一步地)reduced by 40%. The cost of the book as a percentage(百分率) of the original(原来的)price is( )
2、a/b is a fraction(分数). If 2 is added to the numerator(分子), the value of the fraction is 1/2. If 3 is added to the denominator(分母), the fraction has a value of 1/3. The value of the sum a2 + b2 is ( ) 3、The "floor" of a fraction is defined(下定义)to be the largest integer(整数)which is not greater than that fraction. For example(例如), floor(10/3) =3. Evaluate(求…的值) floor(floor(1000/7)/(floor(71/2)). 4、If I climb a staircase(楼梯)2 steps at a time, one step is left over. Climbing 3 steps at a time gives 2 steps left over, while climbing 4 at a time gives 3 left over. How many steps are there if there are fewer(较少的)than 20?
2、a/b is a fraction(分数). If 2 is added to the numerator(分子), the value of the fraction is 1/2. If 3 is added to the denominator(分母), the fraction has a value of 1/3. The value of the sum a2 + b2 is ( ) 3、The "floor" of a fraction is defined(下定义)to be the largest integer(整数)which is not greater than that fraction. For example(例如), floor(10/3) =3. Evaluate(求…的值) floor(floor(1000/7)/(floor(71/2)). 4、If I climb a staircase(楼梯)2 steps at a time, one step is left over. Climbing 3 steps at a time gives 2 steps left over, while climbing 4 at a time gives 3 left over. How many steps are there if there are fewer(较少的)than 20?
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谢谢!
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Add, subtract, multiply 、 divide
加减乘除记住就好
加减乘除记住就好
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小升初英语中数学题就是问你几加几或者几减去几
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