Free · Printable · TEKS 4.5C · Algebraic Reasoning
TEKS 4.5C Worksheets — Grade 4 Use models to determine the formulas for
120+ Texas-aligned practice questions on this exact Grade 4 standard. Print at home or practice online with a built-in AI tutor. No sign-up, no paywall.
What TEKS 4.5C says: Use models to determine the formulas for the perimeter of a rectangle (l + w + l + w or 2l + 2w), including the special form for perimeter of a square (4s) and the area of a rectangle (l x w).
This page has 120+ practice questions tagged specifically to TEKS 4.5C. Below: a sample of 8 with answers and explanations so you can preview the worksheet before printing. Every question goes through an AI quality gate (gpt-4o for content review, Claude Sonnet 4.5 for math verification) before publishing.
Cognitive demand: medium. Typical question shape: Rectangle dimensions; pick formula or compute perimeter/area.
Imani is decorating her classroom for a Texas-themed event. She has a rectangular bulletin board that measures 5 feet long and 3 feet wide. What is the perimeter of the bulletin board?
- 16 feet ✓
- 15 feet
- 18 feet
- 20 feet
Why: To find the perimeter of a rectangle, you can use the formula 2l + 2w. In this case, the length (l) is 5 feet and the width (w) is 3 feet. So, the perimeter is calculated as 2 * 5 + 2 * 3, which equals 10 + 6 = 16 feet. Therefore, the correct answer is 16 feet.
Khalil is planning to build a rectangular garden in his backyard in Texas. The length of the garden will be 8 feet and the width will be 5 feet. What will be the perimeter of Khalil's garden?
- 26 feet ✓
- 30 feet
- 40 feet
- 20 feet
Why: To find the perimeter of a rectangle, you can use the formula: perimeter = 2l + 2w. In Khalil's case, the length (l) is 8 feet and the width (w) is 5 feet. So, perimeter = 2(8) + 2(5) = 16 + 10 = 26 feet. Therefore, the perimeter of Khalil's garden is 26 feet.
Rashad is helping his family set up a booth at the State Fair of Texas. They are building a rectangular display for their famous BBQ ribs. The display has a length of 8 feet and a width of 5 feet. What is the perimeter of the display?
- 26 feet ✓
- 40 feet
- 30 feet
- 20 feet
Why: To find the perimeter of a rectangle, you can use the formula P = 2l + 2w, where l is the length and w is the width. Here, the length (l) is 8 feet and the width (w) is 5 feet. So, the perimeter P = 2(8) + 2(5) = 16 + 10 = 26 feet. Therefore, the correct answer is 26 feet.
Scarlett is helping her family at their farm in the Rio Grande Valley. They are planting a rectangular garden that is 6 feet wide and 12 feet long. What is the perimeter of the garden that Scarlett will be planting?
- 36 feet ✓
- 24 feet
- 18 feet
- 30 feet
Why: To find the perimeter of a rectangle, you can use the formula: perimeter = 2 * length + 2 * width. Here, the length is 12 feet and the width is 6 feet. So, perimeter = 2 * 12 + 2 * 6 = 24 + 12 = 36 feet. Therefore, the correct answer is 36 feet.
Riley is setting up a picnic at Enchanted Rock. She has a rectangular picnic blanket that is 4 feet long and 6 feet wide. What is the perimeter of the picnic blanket?
- 20 feet ✓
- 24 feet
- 30 feet
- 12 feet
Why: To find the perimeter of a rectangle, you can use the formula: perimeter = 2 * length + 2 * width. In this case, Riley's blanket is 4 feet long and 6 feet wide. So we calculate the perimeter as 2 * 4 + 2 * 6, which equals 8 + 12, resulting in 20 feet. Therefore, the correct answer is 20 feet.
Amara is planting a rectangular garden in her backyard in Austin, Texas. The length of the garden is 8 feet and the width is 5 feet. What formula can Amara use to find the perimeter of her garden?
- 2 * (8 + 5) ✓
- 8 + 5
- 4 * 8
- 8 * 5
Why: To find the perimeter of a rectangle, you can use the formula 2 * (length + width). In Amara's garden, the length is 8 feet and the width is 5 feet, so the correct formula is 2 * (8 + 5). This will give her the total distance around the garden.
Isabella wants to build a rectangular garden in her backyard in Nacogdoches. The length of the garden is 8 feet and the width is 5 feet. What is the perimeter of Isabella's garden?
- 26 feet ✓
- 40 feet
- 30 feet
- 20 feet
Why: To find the perimeter of a rectangle, use the formula P = 2l + 2w. Here, l = 8 feet and w = 5 feet. So, P = 2 * 8 + 2 * 5 = 16 + 10 = 26 feet. Therefore, the correct answer is 26 feet.
Valentina is building a garden in her backyard in Amarillo, Texas. She wants to create a rectangular garden that is 8 feet long and 5 feet wide. If she wants to put a fence around the garden, what will be the total length of the fence needed to cover the perimeter?
- 26 feet ✓
- 40 feet
- 30 feet
- 20 feet
Why: To find the perimeter of a rectangle, you can use the formula: perimeter = 2 * length + 2 * width. Here, the length is 8 feet and the width is 5 feet. So, the perimeter = 2 * 8 + 2 * 5 = 16 + 10 = 26 feet. Therefore, Valentina will need 26 feet of fencing.
Common questions about TEKS 4.5C
What is TEKS 4.5C?
TEKS 4.5C is a Grade 4 Algebraic Reasoning standard from the Texas Essential Knowledge and Skills. The standard says: Use models to determine the formulas for the perimeter of a rectangle (l + w + l + w or 2l + 2w), including the special form for perimeter of a square (4s) and the area of a rectangle (l x w).
How many TEKS 4.5C practice questions are available?
120+ practice questions tagged to TEKS 4.5C. All free to print or practice online. We pull a fresh set each time you print a worksheet so your kid doesn't see the same questions twice.
What kind of questions test TEKS 4.5C on the STAAR?
Rectangle dimensions; pick formula or compute perimeter/area. TEKS 4.5C is a medium-cognitive-demand standard — 1-2 step questions are typical.
Where do these questions come from?
Generated by our AI pipeline, then independently quality-gated by two cross-vendor models (gpt-4o for content review, Claude Sonnet 4.5 for math verification) before publishing. Every question is tagged to TEKS 4.5C and modeled on real STAAR item shapes. No typos, no wrong answer keys, no broken explanations.