Challenging Singular and Plural worksheet Class 4

Here is a very challenging singular and plural worksheet for Class 4 students, along with the answer key.

Singular & Plural Worksheet (Olypiad Level)

Part 1: Convert to Plural

Change the following singular nouns to their correct plural forms.

1. Goose → ______
2. Radius → ______
3. Criterion → ______
4. Analysis → ______
5. Fungus → ______
6. Child → ______
7. Foot → ______
8. Appendix → ______
9. Oasis → ______
10. Louse → ______

Part 2: Multiple Choice

Choose the correct plural form of each word.

1. What is the plural of “Index”?
   1. Indexes
   2. Indices
   3. Indexies
2. Which is the correct plural form of “Buffalo”?
   1. Buffalos
   2. Buffaloes
   3. Buffalo
3. Select the right plural of “Leaf”:
   1. Leafs
   2. Leaves
   3. Leavs
4. The plural of “Cactus” is:
   1. Cactuses
   2. Cacti
   3. Cactis
5. What is the plural form of “Phenomenon”?
   1. Phenomenons
   2. Phenomena
   3. Phenomenes

Part 3: Fill in the Blanks

Use the correct singular or plural noun to complete the sentence.

1. The ______ (thief / thieves) ran away after stealing the gold.
2. A swarm of ______ (fly / flies) surrounded the food stall.
3. My sister and I have two ______ (ox / oxen) on our farm.
4. The researchers conducted several ______ (analysis / analyses) on the data.
5. We collected many ______ (datum / data) for the experiment.
6. The ______ (sheep / sheeps) were grazing in the field.
7. The history book contains many ______ (appendix / appendices).
8. A flock of ______ (goose / geese) flew overhead.
9. The magician performed incredible ______ (feat / feats) to amaze the audience.
10. The ______ (hero / heroes) saved the town from danger.

Part 4: Identify Mistakes

Find the incorrect plural nouns and rewrite them correctly.

1. The mouses ran across the kitchen floor.
2. My uncle owns three sheeps.
3. The womans were talking in the garden.
4. The childs are playing in the park.
5. The foots of the table are broken.
6. The cactuses are growing in the desert.
7. The criterions for selection are strict.
8. The alumnus of our school are successful.
9. We studied two phenomenons in science.
10. Several parenthesis are used in the math equation.

Answer Key

Part 1: Convert to Plural

1. Geese
2. Radii
3. Criteria
4. Analyses
5. Fungi
6. Children
7. Feet
8. Appendices
9. Oases
10. Lice

Part 2: Multiple Choice

1. 2. Indices ✅
   3. Buffalo ✅
   2. Leaves ✅
   2. Cacti ✅
   2. Phenomena ✅

Part 3: Fill in the Blanks

1. Thieves ✅
2. Flies ✅
3. Oxen ✅
4. Analyses ✅
5. Data ✅
6. Sheep ✅
7. Appendices ✅
8. Geese ✅
9. Feats ✅
10. Heroes ✅

Part 4: Identify Mistakes

1. Mouses ❌ → Mice ✅
2. Sheeps ❌ → Sheep ✅
3. Womans ❌ → Women ✅
4. Childs ❌ → Children ✅
5. Foots ❌ → Feet ✅
6. Cactuses ❌ → Cacti ✅
7. Criterions ❌ → Criteria ✅
8. Alumnus ❌ → Alumni ✅
9. Phenomenons ❌ → Phenomena ✅
10. Parenthesis ❌ → Parentheses ✅

This worksheet will truly test students’ mastery of singular and plural nouns.