The document discusses methods for adding and subtracting fractions using the Criss-Cross Smiley Face method. It provides examples of adding and subtracting both positive and negative numbers. It then has a skills review section with questions about adding, subtracting and multiplying positive and negative numbers. The final sections provide practice problems for students to apply the Criss-Cross Smiley Face method for adding and subtracting fractions.

1. Adding and Subtracting Fractions Criss-Cross Smiley Face Method by Mr. Hoover Click to begin

12. Criss-Cross Smiley Face Method Click to continue 2 + 3 = 5 4 Step 1: Criss – multiply 2 x 4 and bring down + sign Step 2: Cross – multiply 3 x 5 Step 3: Smiley Face – multiply 5 x 4 Step 4: Solve and simplify if needed. Leave fraction as an improper fraction. 2 x 4 8 + 20 5 x 4 3 x 5 15 23 = 20

13. Criss-Cross Smiley Face Method Click to continue 1 - 2 = 6 3 Step 1: Criss – multiply 1 x 3 and bring down - sign Step 2: Cross – multiply 2 x 6 Step 3: Smiley Face – multiply 6 x 3 Step 4: Solve and simplify if needed. Leave fraction as an improper fraction. 1 x 3 3 - 18 6 x 3 2 x 6 12 -9 = = 18 -1 2

14. Practice Click on the correct answer. Leave fraction as an improper fraction. 1 + 3 = 5 4 OK, let’s practice what we just learned. = ? ? ? ? 4 9 4 20 19 9 19 20

15. Practice Click on the correct answer. Leave fraction as an improper fraction. 2 - 2 = 3 5 = ? ? ? ? 0 15 4 15 0 -2 -4 15

16. Practice Click on the correct answer. Leave fraction as an improper fraction. 6 + 4 = 7 3 = ? ? ? ? 24 21 46 21 1 1 24 10

17. Practice Click on the correct answer. Leave fraction as an improper fraction. 7 - 1 = 5 6 = ? ? ? ? 6 11 47 11 37 30 1 5