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Grade 6 online lessons on length
Find the circumference of the circles below.
(2m 44s)
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1.
Measure the following lengths in centimetres and convert the measurements into millimetres.
2.
Convert the following measurements into millimetres.a) 2 cmb) 48 cmc) 15 cmd) 31 cm 7 mme) 43 cm 4 mm
3.
Lorna had a string that was 86 cm long. What was the length of the string in millimetres?
4.
Kaku’s height is 135 cm 7 mm. What is her height in millimetres?
5.
The length of a ribbon used to tie a gift box is 127 cm 5 mm. What is the length of the ribbon in millimetres?
6.
A tablet is 27 cm long. What is the length of the tablet in millimetres?
7.
A television screen has a length of 60 cm and a width of 33 cm.a) What is the length of the television screen in millimetres?b) What is the width of the television screen in millimetres?
8.
Convert the following measurements into centimetres.a) 30 mmb) 580 mm
9.
Convert the following measurements into centimetres and millimetres.a) 25 mmb) 259 mmc) 404 mmd) 77 mm
10.
A thread used to do tacking measures 160 mm. What is the length of the thread in centimetres?
11.
A table mat has a length of 135 mm. What is the length of the table mat in centimetres and millimetres?
12.
A geometrical set is 172 mm long. How long is the geometrical set in centimetres and millimetres?
13.
Work out the following: Length addition (centimetres and millimetres)
14.
A tailor had two ribbons. One ribbon was 49 cm 8 mm long and the other ribbon was 32 cm 6 mm long. What was the total length of the two ribbons?
15.
The distance from the teacher’s table to the Mathematics corner is 232 cm 4 mm and the distance from the Mathematics corner to the classroom door is 440 cm 9mm. What is the total distance from the teacher’s table to the classroom door through the Mathematics corner?
16.
Work out the following: (subtraction of cm and mm)
17.
A table has a length of 174 cm 4 mm and a width of 99 cm 7 mm. What is the difference between the length and width of the table?
18.
Kanini’s string measured 104 cm 5 mm while Abwajo’s string measured 54 cm 9 mm. How much longer was Kanini’s string than Abwajo’s?
19.
Work out: (multiplication of cm and mm)
20.
A square tile has a length of 42 cm 8 mm. What is the total length of the four sides of the tile?
21.
Mwajuma had a piece of wood measuring 36 cm 4 mm. What is the total length of 16 such pieces of wood?
22.
The picture below show trees that were planted to control soil erosion.a) What is the distance from tree B to tree D?b) What is the distance from tree A to tree E?
23.
Work out: (division of cm and mm)
24.
Work out:a) 18 cm 6 mm ÷ 3b) 117 cm 9 mm ÷ 9
25.
A skipping rope measuring 214 cm 2 mm was cut into 14 equal pieces. What was the length of each piece?
26.
Wema had a string measuring 44 cm 8 mm. If she cut the string into 8 equal pieces, what was the length of each piece?
27.
Look at the circles below. Use them to answer the questions that follow.a) Name the radii in a, b and c.b) Name the diameter in a, b, and c.c) Why is line IJK in circle c not a diameter?d) Why is line GJ in circle c not a radius?
28.
Fill in the table below by finding the missing measurements. (Use p=#22/7#)
29.
Find the circumference of the circles below.
30.
Find the circumference of a circle whose diameter is 98 cm.
31.
A small bicycle wheel has a radius of 56 cm. Calculate the circumference of the bicycle wheel.
32.
A circular grass lawn has a diameter of 140 cm. Harriet walked around the grass lawn. What distance did she cover?
33.
A circular field has a radius of 350 cm. Sidney walks around the field twice every morning. What distance does he cover everyday?
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