Teachers > ANSWERS to Rainforest Math Problems
Rainforest Math Problems #1
1. 5 × 8 = 40 miles
2. 8 × 6 = 48 figs
3. 37 - (6 + 6) = 25 mosquitoes
4. 3 × 12 = 36 crops
5. 9 + 74 + 15 + 21 = 119 days
6. 119 ÷ 7 = 17 weeks
7. 38 - 17 = 21 eggs hatched in the second hour
8. 7 + 3 + 1 + 4 = 15 animals
9. 6 × 11 = 66 legs
10. 48 ÷ 12 = 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.
Rainforest Math Problems #2
1. 43 × 37 = 1591 figs
2. 437 - (125 + 32) = 280 mosquitoes
3. 4 × 6 = 24 square miles
4. 2067 ÷ 52 = 39 3/4 or 39.75 eggs on average
5. 3 1/4 ÷ 1/100 = 13/4 × 100/1 = 1300/4 = 325
6. 75 ÷ (5 + 1) = 12 1/2 or 12.5 figs each
7. 3,874,922 - 1,375,632 = 2,499,290
8. 10,947 + 9,544 = 20,491
9. 75 9/16 - 87 3/8 = 75 9/16 - 67 6/16 = 8 3/16 feet taller
10. 12 ÷ 24 = 1/2 = 50%
Bonus Problem: Answers to questions 1, 2, 3, 5, 7, 8, and 10 are whole numbers. Of these, answers to 2, 3, 7 and 10 are even numbers. Answers to 1, 5, and 8 are odd.
Rainforest Math Problems #3
1. 34 + 17 + 19 + 46 + 5 = 121 teeth
2. 37 + 14 + 27 + 41 + 12 = 131 teeth
3. (66 + 121) - 131 = 56 teeth
4. 5 + 5 + 4 + 5 + 2 = 21 years
5. (12 × 100) ÷ 24 = 50%
6. (8 × 100) ÷ 24 = 33.33%
7. (3 × 100) ÷ 24 = 12.5%
8. (1 × 100) ÷ 24 = 4.17%
9. 1,000,000 ÷ 1/10,000 = 100 ounces. 100 ounces ÷ 16 = 6.25 or 6 1/4 pounds.
10. 16 × 10,000 = 160,000 ants.
Bonus Questions:
121 ÷ 21 = 5.76 The crocodile grows an average of 5.7 teeth every year.
131 ÷ 21 = 6.23 The crocodile loses an average of 6.2 teeth every year.
Based on these average, in ten years the crocodile will grow 57 teeth (5.7 X 10) and loose 62 (6.2 x 10).
62 - 57 = 5 In ten years the crocodile should have 5 fewer teeth than she does now or 51 teeth (56 - 5) teeth.
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