1) Sam scored 18 points for correct answers and lost 3 points for incorrect answers. The total points Sam scored is 18 - 3 = 15 points.
2) The average temperature in New York in July is 76°F and in the month of January is 37°F. The difference in temperature is 76 - 37 = 39°F.
3) The melting point of hydrogen is -259°C and the melting point of oxygen is -218°C. The difference in melting points is -218 - (-259) = -218 + 259 = 41°C. Therefore, the melting point of oxygen is 41°C more than the melting point of hydrogen.
4) The Roman Empire began in 31 B.C. and fell in A.D. 476. To find the duration, we add the years from 31 B.C. to 1 A.D. (31 years) and then add the years from 1 A.D. to 476 A.D. (476 years). The total duration is 31 + 476 = 507 years.
5) Sara burned 300 calories and consumed a pizza with 400 calories. The difference is 400 - 300 = 100 calories. Since she consumed more calories than she burned, she gained 100 calories.
Parent Tip: Review the logic above to help your child master the concept of adding integers word problems worksheet.
