Make a ten or a hundred to add mentally.

198 + 132

1,274 + 3,599

2 H2 + 1 02 is balanced to what equation?

How do you solve 26: 13/16

The Atlanta Braves baseball team has a ratio of 8 wins to 6 losses. If they play 154 games, how many games did they win?

How can you tell if the sum will be positive, neagitive, or zero

What is the simplified expression for 4 to the power of negative 3 multiplied by 3 to the power of 4 multiplied by 4 to the power of 2 whole over 3 to the power of 5 multiplied by 4 to the power of negative 2?

What is y - 5 (2 - y) = 8

A baby gains 11 pounds in its first year of life. The baby gained 4 1/4 pounds during the first four months and 3 1/2pounds in its second four months. How much did the baby gain in the last four months?

Y=3x+5 what does the y intercept tells about this equation?

Factor 10y^2 - 23y + 12

A textbook store sold a combined total of 440 physics and sociology textbooks in a week. The number of sociology textbooks sold was 54 less than the number of physics textbooks sold. How many textbooks of each type were sold?