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# Ln12&13

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# Ln12&13

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### Ln12&13

1. 1. Problem of the Day What is the sum of the ﬁrst ten even numbers?
2. 2. ANSWERS TO WP 11 1) 115,000 visitors 13) \$249 3) 1193 runners 15) \$1000.00 5) a. -2, 0, 1/2, 1 b. 1/2 17) 3 1/9 7) 1 • 2 < 1 + 2 19) 9720 9) a. 1, 2, 4, 8, 16 21) \$44.70 b. 1, 2, 3, 4, 6, 8, 12, 24 23) 5/54 c. 1, 2, 4, 8 25) a. 15/4 b. 4/15 c. 1 d. 8 27) 5/8, 3/4, 7/8, 1 11) 29) segment BC = 1 5/8 inches
3. 3. Something To Think About Is God restricted in time like we are? Is it impossible for God not only to slow elapsed time by high speed, but to experience time in ways unknown to us? Psalms 90:4 says, "For a thousand years in your sight are like a day that has just gone by, or like a watch in the night." 2 Peter 3:8 says, "But do not forget this one thing, dear friends: With the Lord a day is like a thousand years, and a thousand years are like a day." So it seems fairly certain that God is not limited in time the way we are.
4. 4. Problems About Comparing; Elapsed-Time Problems Lesson 12
5. 5. Problems About Comparing; Elapsed-Time Problems What are some real-world situations where you would need to compare? How can you use estimation to see if an answer is reasonable? What is the formula for ﬁnding the difference in comparison problems? When you come to school in the morning, is that earlier or later than when you leave school in the afternoon? When you turned 10, was that date earlier or later than when you turned 9? What is the formula for ﬁnding the difference in elapsed-time problems?
6. 6. Practice How many years were there from 1215 to 1791? John F. Kennedy was elected president in 1960 at the age of 43. In what year was he born? Write a word problem about comparing that ﬁts this equation: 58 in. - 55 in. = d Write a word problem about elapsed time that ﬁts this equation: 2003 - b = 14
7. 7. PROBLEMS ABOUT EQUAL GROUPS Lesson 13
8. 8. PROBLEMS ABOUT EQUAL GROUPS Understand the problem Make a Plan Solve - Carry out the plan Check - Do I have a reasonable answer? Does it make sense?
9. 9. PROBLEMS ABOUT EQUAL GROUPS Juanita packed 25 marbles in each box. If she ﬁlled 32 boxes, how many marbles did she pack in all?
10. 10. PROBLEMS ABOUT EQUAL GROUPS Movie tickets were \$8 each. The total ticket sales were \$960. How many tickets were sold?
11. 11. PROBLEMS ABOUT EQUAL GROUPS Six hundred new cars were delivered to the dealer by 40 trucks. Each truck carried the same number of cars. How many cars were delivered by each truck?
12. 12. PROBLEMS ABOUT EQUAL GROUPS Homework: page 90 1-29 odds