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Application Problem

Application Problem. 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?

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Application Problem

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  1. Application Problem 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?

  2. Rectangular Sections compared to Standard Algorithm 16 X12 32 160 192

  3. Practice Problems • 25 x 24 2. 93 x 38 3. 42 x 65

  4. Mental Math and Multiplication 1. 6 x 298 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

  5. Mental Math and Multiplication 2. 8 x 214 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

  6. Mental Math and Multiplication 3. 14 x 50 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

  7. Mental Math and Multiplication 4. 2 x 9 x 50 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

  8. 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.

  9. 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?

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