1. A tailor has a piece of ribbon that is 30 inches long. She cuts off a piece that is 55 cm long for a project. How much ribbon is left in centimetres?
a) 15.2 cm
b) 21.2 cm
c) 25.4 cm
d) 30.0 cm
Answer: b)
Explanation: Total length of ribbon = 30 inches
= 30 x 2.54 = 76.2 cm (1 inch = 2.54 cm)
Length of ribbon she cuts off = 55 cm
Length of ribbon left = 76.2 - 55 = 21.2 cm
2. A carpenter has two boards; one measures 48 inches and the other 72 inches. If he needs to cut them down to a total length of 250 cm for a project, how much must he remove in total?
a) 44.8 cm
b) 52.4 cm
c) 54.8 cm
d) 70.2 cm
Answer: c)
Explanation: Total length in inches = 48 + 72 = 120 inches
= 120 x 2.54 = 304.8 cm (Since 1 inch = 2.54 cm)
Now, subtracting the target length from the converted length (304.8 - 250 = 54.8 cm)
The length he needs to remove = 54.8 cm
3. A science experiment requires a metal wire that is exactly 200 cm long. If a student has a wire that is 90 inches long, how much needs to be cut off?
a) 11.4 cm
b) 28.6 cm
c) 42.4 cm
d) 48.6 cm
Answer: b)
Explanation: Length of metal wire = 200 cm
Length of wire student has = 90 in = 90 x 2.54 = 228.6 cm
Length of wire he needs to cut off = 228.6 - 200 = 28.6 cm
4. In a textile workshop, fabric measuring 150 cm is required. If the fabric roll measures 80 inches, how much additional fabric in centimetres is needed?
a) 30.4 cm
b) 53.2 cm
c) 52.4 cm
d) 67.8 cm
Answer: b)
Explanation: Length of fabric required = 150 cm
Length of fabric roll = 80 in = 80 x 2.54 = 203.2 cm
Additional length of fabric needed = 203.2 - 150 = 53.2 cm
5. A gardener needs to place a line of stones along a path that is 1300 inches long. If each stone covers a length of 13 cm, how many stones are required?
a) 259
b) 130
c) 254
d) 300
Answer: c)
Explanation: Length of a stone = 13 cm
Total Length of path for placing stone = 1300 in = 1300 x 2.54
= 3302 cm
Number of stones = = 254
