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.

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

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