解：假设个位数是x，那么十位数是x+2；乘积x（x+2）+40=10（x+2）+x。结果是x是4或者5；十位数是6或者7；俩位数是64或者75。。
结果1 题目 The units digit of a two-digit number is 4more than the tens digit. If the digits of the number are reversed, a new number is formed which is 10more than twice the original number. Find the original number. 相关知识点: 试题来源: 解析 26 26 反馈 收藏 ...
the tens digits is twice the unit digit.find the number 相关知识点: 试题来源: 解析 一个两位数的个位与十位数字的和为12且十为数是个位的2倍.求这个两位数.设十位数为a,个位数为b显然a+b=12a=2b所以a=8 b=4所以为84结果一 题目 the sum of the digits of two number is 12.the tens digits...
相关知识点: 试题来源: 解析 0, 2, 4, 6 or 8. We need to consider whether the last two digits of a number are divisible by 4 to see if the number is divisible by 4. Therefore the tens digit can be 0, 2, 4, 6 or 8.反馈 收藏 ...
This is true since the place value of any digit contributes to its equal place value (and possibly also to a greater place value) in the product.That is, the hundreds digit of each number being multiplied contributes to the hundreds digit (and possibly to digits of higher place value) i...
now x = 2 . put the value of x in eq'n 1 , 31(2)= 62 the original number obtained is 62 Q. Suppose there is a two digit number , whose tens digit is three times its ones digit. If its digits are reversed and this new number is added to 36 , then we get the ...
A 2-digit number is such that the product of the digit is 20. If 9 is subtracted from the number, the digits interchange their places. Find the number. View Solution A two digit number is such that the product of its digits is 14. When 45 is added to the number, then the digits ...
= 2 tens + 1 ten + 2 (simplify) = 3 tens + 2 (simplify) = 32 (add) So 28 + 4 = 32. Addition of Two Digit Numbers using Place Value We can use the concept of place value to add two-digit numbers. For this identify the digits at the tens and ones place in the two addend...
The tens digit is the sum of the hundreds digit and the thousands digit. The ones digit is the sum of the other three. The sum of all four digits is 16. Find Tom's number. 相关知识点: 试题来源: 解析 1348 汤姆的号码按顺序有四位.十位数字是百位数字和千位数字的和.个位数字是其它三...
Answer to: If the units digit of a two-digit number is 6 more than the tens digit and the number is 8 more than twice the sum of the digits, what...