Mental Math Problems

Mental Math Problems

1.  The number of edges of a cylinder plus number of sides

     of a square is equal to __________________.

2.  The value of 'n' in the equation '5n+10 = 20' is

      ______________________.

3.  The value of the unknown number in the equation :

     24 x ? = 28 + 20 is _________________.

4.  Approximately how many hours does a person sleep in

     5 weeks?  _____________________.

5.  500 nickels = __________ dimes or ___________ quarters.

6.  Melisa is 4 years younger than Selina.  Selina is 2 years

     older than Manu.  The sum od their ages is 18 years. 

     How ole is Manu? __________________.

7.  100 hundreds - 700 ones + 270 tens = ? ______________.

8.  180/20+105x20 ? ______________.

9.  The sum of 1+2+3+4+5+6+7+8+9+10 = ? _____________.

10. The GCF of 24, 72, and 144 is ? _____________