Class 4 Maths Word Problems Chapter 1 Shapes Around Us

Q1: Ria is making a cube using straws for each edge. If she needs one straw for each edge of the cube, how many straws will she need in total?
Sol: A cube has 12 edges. So, Ria will need 12 straws.

Q2: Kunal has a gift box shaped like a cuboid. He wraps the entire box with coloured paper. The box has 6 faces. If each face takes 1 square sheet, how many sheets does he need?
Sol: A cuboid has 6 faces. So, Kunal needs 6 square sheets.

Q3: Meena wants to decorate the edges of a cube with golden tape. If one edge is 10 cm long, how much tape will she need to cover all the edges of the cube?
Sol: Number of edges in a cube = 12
Length of each edge = 10 cm
Total tape = 12 × 10 = 120 cm

Q4: A pyramid has a square base and 4 triangular faces. If Rahul builds 3 such pyramids using cardboard, how many faces will there be in total?
Sol: Faces per pyramid = 1 square + 4 triangles = 5 faces
For 3 pyramids = 3 × 5 = 15 faces

Q5: There are 16 wheels in a garage. All wheels are either from cars (4 wheels) or bicycles (2 wheels). If there are 2 cars, how many bicycles are there?
Sol: Wheels from 2 cars = 2 × 4 = 8
Remaining wheels = 16 – 8 = 8
Number of bicycles = 8 ÷ 2 = 4 bicycles

Q6: Ananya has 4 photo frames. Each frame is in the shape of a square with a side of 5 cm. What is the total length of ribbon she needs to decorate all the frames around their borders?
Sol: Perimeter of 1 square = 4 × side = 4 × 5 = 20 cm
For 4 frames = 4 × 20 = 80 cm

Q7: Harshit is building toy houses using cardboard. Each house has 1 triangle (for the roof) and 4 rectangles (for the walls). How many shapes does he use for 5 toy houses?
Sol: Shapes per house = 1 triangle + 4 rectangle = 5 shapes
For 5 houses = 5 × 5= 25 shapes

Q8: Sara made a wall decoration using 6 square tiles and 4 triangular tiles. How many sides are there in total on the shapes she used?
Sol: Sides in 1 square = 4 

→ 6 squares = 6 × 4 = 24 sidesSides in 1 triangle = 3

→ 4 triangles = 4 × 3 = 12 sidesTotal = 24 + 12 = 36 sides

Q9: A traffic sign is in the shape of a triangle. If one side is 5 m, the second is 5 m, and the third is 6 m, what kind of triangle is it?
Sol: It has two equal sides (5 m and 5 m), so it's an isosceles triangle.

Q10: Priya has a puzzle box that is shaped like a cube. If she wants to paint all the faces of the cube, and one face takes 10 ml of paint, how much paint will she need in total?
Sol: Number of faces in a cube = 6
Paint per face = 10 ml
Total paint = 6 × 10 = 60 ml