The document provides information about rounding numbers up to 100 to the nearest ten. It gives the rule for rounding which is to round down if the number is 4 or less, and round up if it is 5 or more. An example poem is also given to help remember the rounding rule. Several examples are worked out showing how to round numbers like 36, 74, 73, and 77 to the nearest ten. Students are then asked to round 5 numbers like 19, 73, and 92 to practice the skill.

1. 1 st Grade Michelle Dawson Francois http://math.phillipmartin.info/math_teacher3.htm

2. Standard- M1N1. Students will estimate, model, compare, order, and represent whole numbers up to 100. Element- d. Understand the magnitude and order of numbers up to 100 by making ordered sequences and representing them on a number line. Essential Question- How can rounding help me solve a difficult problem? https://www.georgiastandards.org/standards/

3. When a question asks you to round or estimate, you are being asked “about how many?” Your approximate number will help you solve problems that maybe hard to solve. http://math.phillipmartin.info/math_estimate.htm

4. When rounding to the nearest ten up to 100. Your answer will be one of the numbers below because they are multiples of ten. 0, 10, 20, 30, 40, 50, 60, 70, 80, 90,100 The rule to rounding- 0, 1, 2, 3, 4- round down, 5, 6,7, 8, 9 – round up .

5. Remembering this poem with the rule will also help you round. Find your number. Look right next door. 4 or less just ignore. 5 or more, add 1 more . Yuskaitis, Monica, Rounding –Math Flash, http://math.pppst.com/rounding.html

6. Remember the poem Find your number. Look right next door. 4 or less just ignore. 5 or more, add 1 more. Round to 20 Round to 30 2 1 2 7

7. Remember the poem. Round 36 to the nearest ten. 31 32 33 34 35 36 37 38 39 40 30

8. Round 36 to the nearest ten. The nearest ten to 36 is 40. 31 32 33 34 35 36 37 38 39 40 30

9. Round 74 to the nearest ten. 71 72 73 74 75 76 77 78 79 80 70

10. Round 74 to the nearest ten. The nearest ten to 74 is 70. 71 72 73 74 75 76 77 78 79 80 70

11. Number your paper 1-5. Round the given number to the nearest ten. Remember the rule and use it to help you solve. Get Ready… http://school.phillipmartin.info/school_pencil.htm

12. 0 10 6 1 2 3 4 5 6 7 8 9 10 0

13. 20 10 18 11 12 13 14 15 16 17 18 19 20 10

14. 70 75 80 71 72 73 74 75 76 77 78 79 80 70

15. 70 75 80 71 72 73 74 75 76 77 78 79 80 70

16. 95 90 100 91 92 93 94 95 96 97 98 99 100 90

17. 1. Round 5 to 10 – answer b 2. Round 19 to 20 – answer a 3. Round 73 to 70 – answer a 4. Round 77 to 80 – answer c 5. Round 92 to 90 – answer b http://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Blue_check.svg/600px-Blue_check.svg.png

18. Essential Question: How can rounding help me solve a difficult problem? Answer- Rounding gives us an answer close to the correct one which helps us solve hard problems. Your answer will be a multiples of ten. 0, 10, 20, 30, 40, 50, 60, 70, 80, 90,100 http://journal.media-culture.org.au/0510/images/review-cover.jpg

19. The rule to rounding- 0, 1, 2, 3, 4- round down, 5, 6,7, 8, 9 – round up . Find your number. Look right next door. 4 or less just ignore. 5 or more, add 1 more .

20. http://en.wikipedia.org/wiki/Porky_Pig