- From the third equation: Ice cream + Ice cream = 2, so Ice cream = 1.
- From the second equation: 26 - Donut = Ice cream. Substituting Ice cream = 1 gives 26 - Donut = 1, so Donut = 25.
- From the fourth equation: Watermelon + Watermelon = Ice cream + 9. Substituting Ice cream = 1 gives 2 * Watermelon = 1 + 9 = 10, so Watermelon = 5.
- From the first equation: Donut = Watermelon + Watermelon + Popsicle. Substituting Donut = 25 and Watermelon = 5 gives 25 = 5 + 5 + Popsicle, so Popsicle = 15.
- The final equation is: Watermelon + Popsicle + Donut = ?
- Substituting the values: 5 + 15 + 25 = 45.
45
Parent Tip: Review the logic above to help your child master the concept of 4th grade fun worksheet.