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Math primary 3 measurments
1. MEASURMENTS
Length in metres (m) and centimetres (cm)
10 20 30 40 60 70 80 90
50 cm 150 cm 250 cm
0m 1m 2m 3m
1 m = 100 cm 100 cm = 1 m
2 m = 200 cm 300 cm = 3 m
150 cm = 1 m 50 cm 250 cm = 2 m 50 cm
2. Convert metres to centimetres
1. 1 m 20 cm =1m + 20 cm
= 100 cm + 20 cm
= 120 cm
2. 2 m 5 cm =2m + 5 cm
= 200 cm + 5 cm
= 205 cm
3. 3 m 63 cm = 3 m + 63 cm
= 300 cm + 63 cm
= 363 cm
3. Convert metres to centimetres
1. 180 cm = 100 cm + 80 cm
=1m + 80 cm
= 1 m 80 cm
2. 265 cm = 200 cm + 65 cm
=2m + 65 cm
= 2 m 65 cm
3. 505 cm = 500 cm + 5 cm
=5m + 5 cm
= 5 m 5 cm
4. Compare and order length m and cm
Circle the longest lengths
1. 2 m 24 cm , 214 cm
2. 102 cm , 1 m 20 cm
3. 2 m 4 cm , 240 cm
4. 3m , 294 cm
5. 5 m 50 cm , 505 cm
6. 630 cm , 3 m 60 cm
7. 1 m 10 cm , 10 m
5. Compare and order length m and cm
Arrange the lengths in order begining from the shortest
1. 2 m 30 cm , 203 cm , 1 m 3 cm
1 m 3 cm , 203 cm , 2 m 30 cm
2. 190 cm , 1 m 19 cm , 9m
1 m 19 cm , 190 cm , 9m
3. 245 cm , 425 cm , 2 m 54 cm
245 cm , 2 m 54 cm , 425 cm
4. 30 cm , 3m , 1 m 3 cm
30 cm , 1 m 3 cm ,3m
5. 10 m , 110 cm , 1 m 1 cm
1m 1 cm , 110 cm , 10 m
6. Lenght in centimetres (cm) and millimetres (mm)
1 2 3 4 6 7 8 9
5 mm 15 mm 25 mm
0 cm 1 cm 2 cm 3 cm
1 cm = 10 mm 10 mm = 1 cm
2 cm = 20 cm 30 mm = 3 cm
15 mm = 1 cm 5 mm 25 mm = 2 cm 5mm
7. 0 cm 1 cm 2 cm 3 cm 4 cm 5 cm 6 cm 7 cm
5 cm 5 mm
3 cm
4 cm 3 mm
5 cm 9 mm
7 mm
8. Convert centimetres to millimetres
1. 1 cm 5 mm = 1 cm + 5 mm
= 10 mm + 5 mm
= 15 mm
2. 2 cm 1 mm = 2 cm + 1 mm
= 20 mm + 1 mm
= 21 mm
3. 5 cm 3 mm = 5 cm + 3 mm
= 50 mm + 3 mm
= 53 mm
9. Convert centimetres to millimetres
1. 18 mm = 10 mm + 8 mm
= 1 cm + 8 mm
= 1 cm 8 mm
2. 26 mm = 20 mm + 6 mm
= 2 cm + 6 mm
= 2 cm 6 mm
3. 55 mm = 50 mm + 5 mm
= 5 cm + 5 mm
= 5 cm 5 mm
10. Lenght in kilometres (km) and metres (m)
1 kilometres = 1000 metres
1 km = 1000 m
1. 2 km = 2000 m
2. 6 km = 6000 m
3. 1 km 200 m = 1 km + 200 m
= 1000 m + 200 m
= 1200 m
4. 3 km 150 m = 3 km + 150 m
= 3000 m + 150 m
= 3150 m
11. Write in metres
1. 4 km 25 m = 4 km + 25 m
= 4000 m + 25 m
= 4025 m
2. 5 km 5 m = 5 km +5m
= 5000 m + 5 m
= 5005 m
3. 1 km 125 m = 1 km + 125 m
= 1000 m + 125 m
= 1125 m
12. Write in kilometres and metres
1. 3500 m = 3000 m + 500 m
= 3 km + 500 m
= 3 km 500 m
2. 1250 m = 1000 m + 250 m
= 1 km + 250 m
= 1 km 250 m
3. 4444 m = 4000 m + 444 m
= 4 km + 444 m
= 4 km 444 m
13. Write in kilometres and metres
1. 2012 m = 2000 m + 12 m
= 2 km + 12 m
= 2 km 12 m
2. 6050 m = 6000 m + 50 m
= 6 km + 50 m
= 6 km 50 m
3. 7005 m = 7000 m + 5 m
= 7 km +5m
= 7 km 5 m