R.3

Find the Missing Side

Q4 · Apr–Jun

Use the area or the perimeter and one side to find the other side of a rectangle.

Level

Medium

Level

Problems

Show exampleInclude answer key

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 4 Math Find the Missing Side Skill R.3 \cdot Area & perimeter \cdot ★★☆ Medium \cdot Quarter 4 Name Date Score / 6 Scan for answers Find each missing side. Include units. Example 8 m ? Area = 48 m² ? = 6 m Think: Work backward: divide the area by the length, 48 \div 8 = 6 . For a perimeter, take half of it and subtract the length. 1 4 cm ? Perimeter = 14 cm Find the missing side. 2 15 cm ? Area = 75 cm² Find the missing side. 3 6 m ? Area = 12 m² Find the missing side. 4 8 ft ? Perimeter = 20 ft Find the missing side. 5 8 in ? Perimeter = 22 in Find the missing side. 6 9 in ? Perimeter = 24 in Find the missing side. Daniel Math Academy \cdot danielmath.com Worksheet # famie25 \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 4 Math Answer Key R.3 Find the Missing Side \cdot ★★☆ Medium 1 3 cm 2 5 cm 3 2 m 4 2 ft 5 3 in 6 3 in Daniel Math Academy \cdot danielmath.com Worksheet # famie25 \cdot Answer Key \cdot Page 2 / 2

R. Area & perimeter5 skills