To find the area of a rectangle, you multiply the length by the width.
Formula: Area = Length × Width
Here are the step-by-step calculations for each problem:
1.
Problem 1:
* Length: 9 cm
* Width: 7 cm
* Calculation: $9 \times 7 = 63$
* Unit: square centimeters ($cm^2$)
2.
Problem 2:
* Length: 8 mm
* Width: 4 mm
* Calculation: $8 \times 4 = 32$
* Unit: square millimeters ($mm^2$)
3.
Problem 3:
* Length: 6 km
* Width: 3 km
* Calculation: $6 \times 3 = 18$
* Unit: square kilometers ($km^2$)
4.
Problem 4:
* Length: 15 in
* Width: 5 in
* Calculation: $15 \times 5 = 75$
* Unit: square inches ($in^2$)
5.
Problem 5:
* Length: 11 ft
* Width: 7 ft
* Calculation: $11 \times 7 = 77$
* Unit: square feet ($ft^2$)
6.
Problem 6:
* Length: 9 yd
* Width: 5 yd
* Calculation: $9 \times 5 = 45$
* Unit: square yards ($yd^2$)
7.
Problem 7:
* Length: 12 km
* Width: 6 km
* Calculation: $12 \times 6 = 72$
* Unit: square kilometers ($km^2$)
8.
Problem 8:
* Length: 6 m
* Width: 5 m
* Calculation: $6 \times 5 = 30$
* Unit: square meters ($m^2$)
Final Answer:
1. 63 cm²
2. 32 mm²
3. 18 km²
4. 75 in²
5. 77 ft²
6. 45 yd²
7. 72 km²
8. 30 m²
Parent Tip: Review the logic above to help your child master the concept of 5th grade area math worksheet.
