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Power Point Exercises

Power Point Exercises. Names in Numbers. Each letter of the alphabet has a number assigned to it. A-1 B-2 C-3 D-4 E-5 F-6 G-7 H-8 I-9 J-0 K-1 L-2 M-3 N-4 O-5 P-6 Q-7 R-8 S-9 T-0 U-1 V-2 W-3 X-4 Y-5 Z-6. Directions. Write a heading on your first page. Name Date

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Power Point Exercises

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  1. Power Point Exercises

  2. Names in Numbers • Each letter of the alphabet has a number assigned to it. • A-1 B-2 C-3 D-4 E-5 • F-6 G-7 H-8 I-9 J-0 • K-1 L-2 M-3 N-4 O-5 • P-6 Q-7 R-8 S-9 T-0 • U-1 V-2 W-3 X-4 Y-5 • Z-6

  3. Directions • Write a heading on your first page. • Name Date Math Write your first and last name on the first line Use the code to write your name in numbers ! Write your first and last names separately.

  4. Place value

  5. Part 2: Label the left column of your page. • 1. What number is in the tens place? • 2. What number is in the thousands place? • 3. What number is in the ten thousands place? • 4. In you last name, what number is in the millions place? • 5. What number is in the thousandths place in your last name? • 6. Write both of the numbers (first and last name) in expanded form. • 7. Compare your numbers with your partner. Put them in order from least to greatest.

  6. Working with trillions • Numbers are read in periods, or groups of three numbers. (ones, tens, thousands) • Each place value is 10 times the one after it: 1,000 is 1o times 100. • 100,000 (one hundred million is 10 times ______________

  7. 1-2 Writing numbers in expanded form • 3000 is 3 times _______ • 50,000 is 5 times ________ • You can write in expanded form 2 ways: • 62,500 is (6x10,000) + (2x1,000) + (5x100) OR: 60,000 + 2,000 +500 In copybooks: Do 1, 5, 9, 11, 21, 23 IMPORTANT: All work must be shown when writing in copybooks.

  8. Properties of Addition • Commutative: a +b=b+a + = = + Associative: (a+b) +c = a + (b+c) (1 +3) + 5 = 1 + (3 +5) Identity : a + 0 = a + 0 =

  9. Zeroes in subtraction • REMEMBER: 2,000 = 1 thousand, 9 hundreds, 9o tens, and 10 ones. • 2000 – 1 = 1,999. So drop a digit, carry a one!

  10. Inverse Operations • Addition and Subtraction are OPPOSITES or INVERSE operations • One “undoes the other” • EX: 100 + 50 – 50=100 • 3.75 -1 +1= 2.75

  11. Inverse operation • Sam started out the day with some money. His grandmother then gave him $12. He now has $20. How much did Sam start out with? • How would you solve this problem? ___ +12=20. The amount left and the amount spent = _____ 12 + 8=20. We have our answer! Sam started out with $8.

  12. Inverse Operations • Angie saved some money. She spent $12.52 of it on a new bike tire. She has $9.21 left. How much money did Angie save? • How would you write out the problem? • ? - $12.52= $9.21 • $9.21 + $12.52= $21.73 • Angie had saved $21.73

  13. Problem Solving!!! • Imagine: Picture the problem • Name: What are your facts? • Think: Look at the facts. What information is needed? What information is not needed? • Compute: Do the work! • Check:

  14. Imagine • Name facts • Think ( about facts) • Compute • Check • INTCC: I never trip crazy cousins.

  15. Write a related sentence • Example: 32,15, 47: • Answer: 32+15=47; 47-15=32 47-32=15 • Write related sentences for the following: • 1. 29, 54, 8 2. $6.27, $3.49, $9.763. • 3. 532, 99, 631

  16. Use a related sentence • 4. ? – 62=38 5. ?-17=50 6. 27 + ? =75 7. 198- ?=120 8. a +25=42 9. 36 +?62 10. x-106=98

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