1. Splash Screen

2. Five-Minute Check (over Lesson 1–7) Main Idea
Example 1: Problem-Solving Strategy
Lesson Menu

3. I will solve problems by using the guess and check strategy.
Main Idea/Vocabulary

4. The Bactrian camel has two humps, while the dromedary camel has just one. Zach counted 19 animals with a total of 27 humps. How many camels of each type are there?
Example 1

5. Understand What facts do you know? Bactrian camels have two humps.
Dromedary camels have one hump.
There is a total of 19 camels and 27 humps.
What do you need to find?
How many camels of each type are there?
Example 1

6. Plan
You can use the guess and check strategy to solve the problem. Use combinations of 19 total camels to guess.
Example 1

7. Solve Guess: 10 Bactrian camels and 9 dromedary camels
Check: 10 × 2 = 20 humps 9 × 1 = 9 humps
20 humps + 9 humps = 29 humps
Too high. Adjust your guess: Try fewer Bactrian camels and more dromedary camels.
Example 1

8. Solve Guess: 7 Bactrian camels and 12 dromedary camels
Check: 7 × 2 = 14 humps 12 × 1 = 12 humps
14 humps + 12 humps = 26 humps
Too low. Adjust your guess: Try more Bactrian camels and less dromedary camels.
Example 1

9. Solve Guess: 8 Bactrian camels and 11 dromedary camels
Check: 8 × 2 = 16 humps 11 × 1 = 11 humps
16 humps + 11 humps = 27 humps
This guess is correct.
Answer: So, there are 8 Bactrian camels and 11 dromedary camels.
Example 1

10. Check
Look back at the problem = 19 camels and = 27 humps. So, the answer is correct.
Example 1

11. End of the Lesson
End Lesson

12. Five-Minute Check (over Lesson 1–7) Image Bank Math Tool Chest
Represent Decimals
Resources

13. Order the set of numbers from least to greatest.
(over Lesson 1–7)
Order the set of numbers from least to greatest.
1,543, 2,876, 997, 998
2,876, 1,543, 998, 997
1,543, 2,876, 998, 997
997, 998, 1,543, 2,876
998, 1,543, 997, 2,876 A B C D
Five Minute Check 1

14. Order the set of numbers from least to greatest. 2.51, 2.30, 2.15
(over Lesson 1–7)
Order the set of numbers from least to greatest.
2.51, 2.30, 2.15
2.15, 2.30, 2.51
2.30, 2.15, 2.51
2.51, 2.30, 2.15
2.30, 2.51, 2.15 A B C D
Five Minute Check 2

15. Order the set of numbers from least to greatest. 9.909, 6.89, 6.660
(over Lesson 1–7)
Order the set of numbers from least to greatest.
9.909, 6.89, 6.660
6.89, 9.909, 6.660
6.660, 6.89, 9.909
9.909, 6.89, 6.660
6.660, 9.909, 6.89 A B C D
Five Minute Check 3

16. Order the set of numbers from least to greatest. 5.2, 52.3, 40.48, 40
(over Lesson 1–7)
Order the set of numbers from least to greatest.
5.2, 52.3, 40.48, 40
52.3, 40.48, 40, 5.2
40.48, 52.3, 40, 5.2
40, 5.2, 40.48, 52.3
5.2, 40, 40.48, 52.3 A B C D
Five Minute Check 4

17. End of Custom Shows