compiling errors

[yellowxwolf]

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <iomanip>
using namespace std;

int main() {
    int grade;
    int random1;
    int random2;
    int answer;

    // Introduce Program
    cout << "Math Tutor Menu " << endl;
    cout << " " << endl;

    cout << "1. First Grade " << endl;
    cout << "2. Second Grade " << endl;
    cout << "3. Third Grade " << endl;
    cout << " " << endl;

    // Get Grade
    cout << " Enter your grade (1-3): ";
    cin >> grade;

    // Get Problem to solve
    if (grade < 1 || grade > 3) {
        cout << "Sorry you don't meet the requirments to use this program. " << endl;
    } else if (grade == 1) {
        random1 = rand() 9;
        random2 = rand() 9;
             cout << " " << random1 << endl;
             cout << "+" << random2 << endl;
    } else if (grade == 2) {
        random1 = rand() 89 + 10;
        random2 = rand() 89 + 10;
            cout << " " << random1 << endl;
            cout << "+" << random2 << endl;
    } else {
        random1 = rand() 899 + 100;
        random2 = rand() 899 + 100;
            cout << " " << random1 << endl;
            cout << "+" << random2 << endl;
    }//end if

    return 0;

}//end main 

1>c:\documents and settings\my documents\visual studio 2008\projects\mathtutor\mathtutor\mathtutor.cpp(31) : error C2143: syntax error : missing ';' before 'constant'
1>c:\documents and settings\my documents\visual studio 2008\projects\mathtutor\mathtutor\mathtutor.cpp(32) : error C2143: syntax error : missing ';' before 'constant'
1>c:\documents and settings\my documents\visual studio 2008\projects\mathtutor\mathtutor\mathtutor.cpp(36) : error C2143: syntax error : missing ';' before 'constant'
1>c:\documents and settings\my documents\visual studio 2008\projects\mathtutor\mathtutor\mathtutor.cpp(37) : error C2143: syntax error : missing ';' before 'constant'
1>c:\documents and settings\my documents\visual studio 2008\projects\mathtutor\mathtutor\mathtutor.cpp(41) : error C2143: syntax error : missing ';' before 'constant'
1>c:\documents and settings\my documents\visual studio 2008\projects\mathtutor\mathtutor\mathtutor.cpp(42) : error C2143: syntax error : missing ';' before 'constant' 

Now I am far from done with this program, but I cant continue until it lets me do this part of it. So if anybody can help. It would be much appreciated