1. The Recreational District has added a new Little League field. Each of the 4 bases is 75 feet apart and the bases make a perfect square on the field. Aubrey hit a homerun and ran the bases. How far did he run? Are you trying to find the area or the perimeter? How do you know? Application Problem

2. Read Square, 75 feet each side Illustrate Compute 75 x 4 = (70 x 4) + (5 x 4) = 280 + 20 = 300 ft. = Explain

3. Rectangular Sections compared to Standard Algorithm 106 10060160 22012+32 120+ 72192 16 X12 32 160 192

4. 204 40080480 510020+120 500100600 1.25 x 24 308 902,7005603,260 39024+114 2,7905843,374 605 402,4002002,600 212010+130 2,5202102,730 2. 93 x 38 3. 42 x 65 Practice Problems

5. Mental Math and Multiplication Step 1: Break apart 298 300 – 2 = 298 Step 2: Write a number sentence. (6 x 300) – (6 x 2) Step 3: Solve 1800 – 12 = 1788 1. 6 x 298

6. Mental Math and Multiplication Step 1 – Estimate with one of the numbers. 214 ≈ 200 and 8 ≈ 10 (≈ means about) Step 2 – Write a number sentence. (8 x 200) + (8 x 14) = or (10 x 214) – (2 x 214) = Step 3 – Solve 1600 + 112 = 2140 – 428 = 1712 2. 8 x 214

7. Mental Math and Multiplication Step 1 – Remember how to multiply by multiples of 10. Step 2 – Write a number sentence. (10 x 50) + (4 x 50) = Step 3 – Solve 500 + 200 = 700 3. 14 x 50

8. Mental Math and Multiplication Step 1 – Use the Commutative Property to change the order of the factors 2 x 50 x 9 Step 2 – Write a new number sentence. (2 x 50) x 9 = Step 3 – Solve 100 x 9 = 900 4. 2 x 9 x 50

9. Independent Practice Area and Perimeter – WK p. 175 problems 3 and 4 Find both the area and perimeter. Rectangular Multiplication Solve 1. 45 x 91 2. 87 x 56 Multiplication and Mental Math – WK 55 problems 1–4 Tell the strategy you used.

10. Independent Practice An orchard has 6 rows of apple trees with 8 tree in each row. Each apple tree is ten feet wide/across. What is the perimeter of the orchard? Mrs. DiCarlo decided to add some pear trees to the orchard. She planted 5 rows of pear trees with 9 trees in each. How many pear trees does she have? The pear trees are each ten feet wide/across. Which part of the orchard covers more area, the apple or the pear?