CBSE Class 3 Mathematics Practice Test Worksheet Set 10

Question (1). Read the following pictogram and answer the questions:
Here 1 book represents 10 books.

(a) Which subject has maximum number of books?
(b) How many science books are there?
(c) Which subject has minimum number of books?
(d) What is the total number of books?
(e) What is the maximum number of books in the pictogram?
Answer:
(a) Hindi (7 books shown, representing \(7 \times 10 = 70\) books)
(b) 30 science books (\(3 \times 10 = 30\))
(c) Science (3 books shown, representing \(3 \times 10 = 30\) books)
(d) Total books = \(60 + 50 + 70 + 30 + 50 = 260\) books
(e) 70 books
In simple words: Multiply the number of book symbols for each subject by 10 to find the total count.
Exam Tip: Always check the key or legend carefully (1 symbol = 10 units) before counting pictograms.

Question (2). Draw the other halves to make them symmetrical shapes.
Answer:
To complete each symmetrical shape, draw a mirror image of the given half across the central dotted axis of symmetry.
(a) Complete the rectangle by drawing the missing right half.
(b) Complete the symmetrical box/line shape by mirroring the top/bottom across the axis.
(c) Complete the star shape by mirroring the left side across the vertical line.
(d) Complete the triangle by mirroring the right side across the vertical dotted line.
(e) Complete the leaf or curved figure symmetrically across the central stem.
(f) Complete the figure-eight / hourglass shape by mirroring the left bubble across the central line.
In simple words: A symmetrical shape looks identical on both sides of a dividing mirror line.

Exam Tip: Ensure that corresponding points on both sides are exactly at the same perpendicular distance from the line of symmetry.

Question (3). Look at these pictures. Tick (v) the ones which can be divided into exact halves.
(a) Anchor
(b) Mug
(c) Clown face
(d) Spectacles / Glasses
(e) Human hand (palm view showing thumb and fingers)
(f) Hanging photo frame
(g) Envelope
(h) Key with circular ring head
(i) Steam locomotive train (side view)
(j) Ship wheel (steering helm)
(k) Scissors
Answer:
The objects that can be divided into exact mirror halves are:
- (a) Anchor (Yes, vertical line of symmetry)
- (c) Clown face (Yes, vertical line of symmetry)
- (d) Spectacles (Yes, vertical line of symmetry)
- (f) Hanging photo frame (Yes, vertical/horizontal lines of symmetry)
- (g) Envelope (Yes, vertical/horizontal depending on fold)
- (h) Key (Yes, if the round head is perfectly symmetrical, though the blade notches make exact halves tricky, the outline is symmetrical)
- (j) Ship wheel (Yes, highly symmetrical with multiple lines of symmetry)
- (k) Scissors (Yes, along the central closed blade axis)
Objects (b) Mug, (e) Hand, and (i) Train cannot be divided into exact halves due to asymmetric handles, thumb positions, or engine details.
In simple words: Select objects that have a matching left and right side when cut down the middle.
Exam Tip: Look for internal details like handles, asymmetric patterns, or protruding parts that break symmetry.

Question (4). Use a dotted line to divide the shapes into two halves.
(a) Kite
(b) Butterfly
(c) Four-petal flower
(d) Beetle / Bug
Answer:
(a) Kite: Draw a straight vertical dotted line straight down the middle from the top vertex to the bottom tail vertex.
(b) Butterfly: Draw a straight vertical dotted line right down the center separating the left and right wings.
(c) Four-petal flower: Draw a vertical or horizontal dotted line straight through the center dividing the flower into two identical halves.
(d) Beetle: Draw a vertical dotted line straight down the center of its back separating the left and right wings/shell halves.
In simple words: Draw a straight line through the middle so that one side is an exact reflection of the other.