Lower Elementary:
Question: Jack builds a sand castle with 8 different sand molds. The smallest mold holds 1 1/2 cups of sand. The next mold holds 3 cups of sand. The third mold holds 6 cups of sand, and the fourth holds 12 cups of sand. If the pattern continues, then how much sand does the biggest mold hold?
Answer: 192 cups
Solution: Each mold holds twice as much as the last. So, the fifth holds 12+12=24 cups. The sixth holds 24+24=48 cups. The seventh holds 48+48=96 cups, and the eighth holds 96+96=192 cups.
Mathnasium of West Covina is a math-only learning center for K-12 students in West Covina, CA. Trusted by over a million parents, Mathnasium uses personalized learning plans and the proprietary Mathnasium Method™ to help students catch up, keep up, and get ahead on their math journey.
Our specially trained tutors deliver face-to-face instruction in a supportive and fun small-group environment, working with students to develop a deep understanding of math, build confidence, and improve academic performance.
Schedule Assessment
(626) 387-3639
(626) 387-3639
