Rainforest Reckoning Math Problems for Rainforest Rangers. Forest Floor Layer

Transcription

1 Forest Floor Layer Name 1. A bat can fly 5 miles in 1 night. How many miles can she fly in 8 nights? 2. One little monkey eats 8 figs in 1 day. How many figs does he eat in 6 days? 3. A poison dart frog ate 37 insects in 1 day. 6 insects were flies; 6 insects were ants. The rest of the insects were mosquitoes. How many mosquitoes did the frog eat? 4. A strangler fig tree grows 3 crops of fruit in 1 year. How many crops will it grow in 12 years? 5. A blue morpho butterfly was an egg for 9 days, a caterpillar for 74 days, a chrysalis for 15 days, and an imago for 21 days. How many days was the morpho s life cycle? 6. How many weeks was the morpho s life cycle? Hint: Divide your answer to question number 5 by A mother crocodile laid 38 eggs. In 1 hour, 17 eggs hatched. The rest hatched in the next hour. How many eggs hatched in the second hour? 8. In one day, a crocodile ate 7 fish, 3 crabs, 1 crane, 4 turtles, and 3 stones. How many animals did it eat altogether? Hint: Read carefully - this is a tricky question. 9. A leaf cutter ant has 6 legs. How many legs do 11 leaf cutter ants have? eagles live in 48 acres of forest. How many acres does each eagle have for hunting range? Bonus Problem: Look back at the answers to the ten questions above. Which are even numbers? Which are odd?

2 Understory Layer Name 1. A howler monkey can eat 43 figs in one day. How many figs can she eat in 37 days? 2. A poison dart frog ate 437 insects. 125 were flies; 32 were ants. The rest were mosquitoes. How many mosquitoes did the frog eat? 3. A harpy eagles s hunting range is a rectangle 4 miles on the short side, 6 miles on the long side. How many square miles is her range? 4. Together, 52 crocodiles lay 2,067 eggs. On average, how many eggs does each crocodile lay? 5. The scale on the wing of a blue morpho butterfly is 1/100 of an inch wide. How many scales could you line up on a wing 3 1/4 inches side? Hint: Divide 3 1/4 by 1/ Together, 1 male bat and 5 female bats eat 75 figs in 1 night. On average, how many figs does each bat eat? 7. 1,375,632 leaf cutter ants live in one colony. 3,784,922 live in a second colony. How many more ants live in the second colony? 8. One scientist counted 10,947 ants in one day and 9,544 ants on another day. How many ants did she count on both days? 9. One strangler fig tree is 75 9/16 feet tall. Another fig tree is 67 3/8 feet tall. How much taller is the first tree? 10. A monkey sleeps 12 hours every day. What percent of his time does he spend sleeping? Remember there are 24 hours in a day. Bonus Problem: Look back at the answers to the ten questions above. Which are whole numbers? Which are even numbers? Which are odd numbers?

3 Canopy Layer Name A crocodile has a birthday today. When she smiles, it looks like she has about a hundred big, sharp teeth. The scientist who have observed her know a few things about her teeth. For example: When she hatched from her egg she had 66 teeth. In the first five years of her life, she lost 37 teeth and grew 34. In the next 5 years she lost 14 and grew 17. In the next four years she lost 27 and grew 19. In the next five years she lost 41 and grew 46. In the next two years she lost 12 and grew 5. From these numbers, you can figure out exactly how many teeth she really has. 1. How many teeth has she grown since she hatched? 2. How many teeth has she lost? 3. How many teeth does she have today? 4. How old is this crocodile? A young monkey spends 12 hours every day sleeping, 8 hours eating, 3 hours playing, and 1 hour hanging out with adults in his troop. 5. What percent of his day does he spend sleeping? 6. What percent of his day does he spend eating? 7. What percent of his day does the monkey play? 8. What percent does he hang out with the adults? 9. If one ant weighs 1/10,000 of an ounce, how many pounds do a million ants weigh? To find out, multiply 1,000,000 by 1/10,000 (or.0001) and divide the answer by 16 (there are 16 ounces in a pound). 10. If someone gave you a pound of ants, how many ants would you have? Bonus Problem: Can you figure out how many teeth on average the crocodile grows every year? And how many she loses? And then based on averages can you figure out how many teeth she ll have when she s 31 years old?

4 Teacher Key Answers to Math Problems in the Forest Floor Layer 1. 5 x 8 = 40 miles 2. 8 x 6 = 48 figs (6 + 6) = 25 mosquitoes 4. 3 x 12 = 36 crops = 119 days = 17 weeks = 21 eggs hatched in the second hour = 15 animals 9. 6 x 11 = 66 legs = 4 acres Bonus Problem: Answers to 1, 2, 4, 9, and 10 are even numbers. Answers to 3, 5, 6, 7, and 8 are odd. Answers to Math Problems in the Understory Level x 37 = 1,591 figs = 280 mosquitoes 3. 4 x 6 = 24 square miles 4. 2, = /4 1/100 = = ,784,922-1,375,632 = 2,409, , ,544 = 20, / /8 = 8 3/ = 2 or ½ of his day or 50% Bonus Problem: Answers to 1, 2, 3, 5, 7, and 8 are whole numbers. Answers to 2, 3, 7 and 10 are even numbers. Answers to 1, 5, and 8 are odd numbers. Answers to Math Problems in the Canopy Layer = = = = /24-12/24 = 12/24 or ½ or 50% 6. 24/24-16/24 = 8/24 or 1/3 or 33.3% 7. 24/24-21/24 = 3/24 or 1/8 or 12.5% 8. 24/24-23/24 = 1/24 or 4.17% 9. 1,000,000 x = ,000, = 160,000 ants

5 Bonus Problem: The crocodile grows 5.76 teeth per year and loses 6.23 teeth per year. When she s 31 years old, she should have 51 teeth.