Identify the Perimeter
A square has side length x+0.6.
Question: Write the perimeter expression.
✔️ Answer:
4(x+0.6)
Rewrite:
4(x+0.5)
✔️ Answer:
4x+2
Are these equivalent?
4(x+1) and 4x+1
✔️ Answer:
❌ No (the 4 must multiply both terms)
A rectangle has length 2x+1 and width x+0.5.
Question: Write the perimeter expression before simplifying.
✔️ Answer:
2(2x+1)+2(x+0.5)
Rewrite the perimeter of a rectangle given by:
2(3x+0.5)+2(x+1.5)
✔️ Answer:
8x+4
Which is equivalent to 5(x+0.4)?
A) 5x+0.4
B) 5x+2
✔️ Answer:
✅ B
A triangle has sides x+1, 2x, and x+0.4.
Question: Write the perimeter as a sum.
✔️ Answer:
(x+1)+2x+(x+0.4)
Rewrite:
5(0.6x+0.4)
✔️ Answer:
3x+2
Which expressions match the same perimeter? (Select all)
A) 2(3x+1)
B) 6x+2
C) 3x+2
✔️ Answer:
✅ A and B
A pentagon has each side 1.2x+0.8.
Question: Write the perimeter using multiplication.
✔️ Answer:
5(1.2x+0.8)
Rewrite fully:
(2x+1)+(2x+1)+(x+0.5)+(x+0.5)
✔️ Answer:
6x+3
A rectangle’s perimeter simplifies to 8x+4.
Which expression is NOT equivalent?
A) 2(4x+2)
B) 4(2x+1)
C) 2(2x+2)
✔️ Answer:
❌ C