Free 4th Grade Math Worksheets | Activity Shelter - Free Printable

Since you did not select any specific options (ExplainAnswer, TeachTopic, or GeneratePractice are all false), I will provide the solutions to the problems visible on the worksheets in the image. I have broken them down by worksheet section for clarity.

Worksheet 1: Angles and Triangles

Classify each angle or triangle:
1. Obtuse (The angle is wider than a corner of a square).
2. Right (It has the square symbol indicating 90 degrees).
3. Acute (The angle is narrow/sharp).
4. Acute (All angles are sharp/narrow).
5. Obtuse (One angle is very wide).
6. Right (It has the square symbol).

True or False statements:
7. FALSE (The angle shown is acute, but the statement says it is obtuse).
8. TRUE (The triangle has a right-angle symbol).
9. FALSE (The angle shown is obtuse, but the statement says it is acute).

Spiral Review Problems:
* B. Subtract: $4,875 - 4,483 = \mathbf{392}$
* C. Multiples of 5: $\mathbf{5, 10, 15, 20, 25}$

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Worksheet 2: Division with 1 Digit Divisors

Long Division Problems:
1. $245 \div 5 = \mathbf{49}$
2. $255 \div 3 = \mathbf{85}$
3. $724 \div 8 = \mathbf{90}$ remainder $\mathbf{4}$ (or $90.5$)
4. $854 \div 6 = \mathbf{142}$ remainder $\mathbf{2}$
5. $2,451 \div 7 = \mathbf{350}$ remainder $\mathbf{1}$
6. $8,534 \div 2 = \mathbf{4,267}$
7. $4,548 \div 5 = \mathbf{909}$ remainder $\mathbf{3}$
8. $3,429 \div 6 = \mathbf{571}$ remainder $\mathbf{3}$
9. $6,872 \div 9 = \mathbf{763}$ remainder $\mathbf{5}$

Spiral Review Problems:
* A. Round to nearest ten thousand: $592,304 \rightarrow \mathbf{590,000}$
* B. Solve: $2,456 \times 7 = \mathbf{17,192}$
* C. Solve: $79 \times 36 = \mathbf{2,844}$

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Worksheet 3: Lines of Symmetry

Questions:
1. Is the dotted line a line of symmetry? Yes
2. Is the dotted line a line of symmetry? No (The arrows don't match up).
3. Is the dotted line a line of symmetry? Yes
4. How many lines of symmetry? 1 (Vertical line down the middle).
5. How many lines of symmetry? 4 (Vertical, Horizontal, and two Diagonals).
6. How many lines of symmetry? 0 (None).

Draw the lines of symmetry:
7. Square: Draw 4 lines (up/down, left/right, and two diagonals).
8. Heart: Draw 1 vertical line down the center.
9. Letter N: Draw 0 lines (it has rotational symmetry, but no lines of symmetry).

Spiral Review Problems:
* A. Solve: 5 pounds = 80 oz ($5 \times 16$)
* B. Compare: $24 < 228$
* C. Factor pairs for 30: $(1, 30), (2, 15), (3, 10), (5, 6)$

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Worksheet 4: Perimeter and Area

Find the Perimeter (add all sides):
1. Rectangle ($9\text{ ft} + 4\text{ ft} + 9\text{ ft} + 4\text{ ft}$): 26 ft
2. Rectangle ($7\text{ m} + 3\text{ m} + 7\text{ m} + 3\text{ m}$): 20 m
3. Square ($6\text{ mi} \times 4$): 24 mi

Find the Area (Length $\times$ Width):
4. Rectangle ($10\text{ m} \times 6\text{ m}$): 60 sq m
5. Square ($9\text{ yd} \times 9\text{ yd}$): 81 sq yd
6. Rectangle ($12\text{ ft} \times 14\text{ ft}$): 168 sq ft

Are the area and perimeter correct?
7. Given: $P=52$, $A=20$. Sides are 10 and 2.
* Check P: $10+10+2+2 = 24$. The given P is 52.
* Answer: No
8. Given: $P=32$, $A=78$. Sides are 13 and 3.
* Check P: $13+13+3+3 = 32$. (Correct)
* Check A: $13 \times 3 = 39$. The given A is 78.
* Answer: No
9. Given: $P=32$, $A=78$. Sides are 13 and 6.
* Check P: $13+13+6+6 = 38$. The given P is 32.
* Check A: $13 \times 6 = 78$. (Correct)
* Answer: No (Because the perimeter is wrong).

Spiral Review Problems:
* A. Compare: $0.07 < 0.21$
* B. Divide: $6 \overline{)84} = \mathbf{14}$
* C. Factor pairs for 16: $(1, 16), (2, 8), (4, 4)$