Question

→ Find the difference between each pair of items in mm.

(a) Two nails of 2.5 cm and 33 mm. _______
(b) Two sticks of length 42 mm and 2 cm 8 mm. _______
(c) Two wire of length 13.7 cm and 11.5 cm. ________​

Answer 1

Answer:

a) ✮We know that:

1 cm = 10mm

So, 2.5cm = 25mm

✮Solution:

(33-25)mm = 8mm

Therefore, The difference between two nails are 8mm.

b) ✮We know that:

1cm = 10mm

So, 2 cm = 2×10 = 20mm and 8mm = 20+8mm = 28mm

✮Solution:

(42-28)mm = 14mm

Therefore, The difference between two sticks are 14mm.

c) ✮We know that:

1cm =10mm

So, 13.7cm = 13.7×10 = 137mm

And, 11.5cm = 11.5×10 = 115mm

✮Solution:

(137-115)mm = 22mm

Therefore, The difference between two wires are 22mm.

Answer 2

(a) Two nails of 2.5 cm and 33 mm is 8mm

(b) Two sticks of length 42 mm and 2 cm 8 mm is 14mm

(c) Two wire of length 13.7 cm and 11.5 cm is 2.2 cm