Practice the math worksheet on third grade measurement of length. We know, there are three main standard units of length, i.e., kilometer (km), meter (m) and centimeter (cm). The relation between these units will help us to solve different types of problems on measuring length.
1. Fill in the blanks:
(i) 1 km = _________ m
(ii) 1 m = _________ cm
(iii) 1 dm = _________ cm
(iv) 1 m = _________ dm
(v) 1 km = _________ cm
2. (i) Convert 18 m into centimeters.
(ii) Change 32 m 47 cm into centimeters.
(iii) Convert 7 km into meters.
(iv) Convert the following:
(a) 372 cm into meters and centimeters
(b) 2832 cm into meters and centimeters
(v) Convert the following as desired:
(a) 3275 m into kilometers and meters
(b) 5217 m into kilometers and meters
(c) 57 dm into m and cm
3. Add the following:
(i) 72 m 50 cm + 15 m 75 cm
(ii) 102 m 25 cm + 375 m 85 cm
(iii) 8 dm 9 cm + 9 dm 8 cm
(iv) 75 km 312 m + 34 km 215 m
(v) 212 km 132 m + 18 km 230 m
(vi) 81 km 570 m + 17 km 915 m
4. Subtract the following:
(i) 128 km 525 m  20 km 278 m
(ii) 25 m 38 cm  18 m 78 cm
(iii) 9 dm 3 cm  2 dm 9 cm
(iv) 73 km 975 m 87 cm  23 km 375 m 27 cm
(v) 250 km 378 m 75 cm  150 km 287 m 50 cm
Answers for the worksheet on third grade measurement of length are given below to check the exact answers of the above questions on standard units of length.
Answers:
1. (i) 1000 m
(ii) 100 cm
(iii) 10 cm
(iv) 10 dm
(v) 100000 cm
2. (i) 1800 centimeters
(ii) 3247 centimeters
(iii) 7000 meters
(iv) (a) 3 m 72 cm
(b) 28 m 32 cm
(v) (a) 3 km 275 m
(b) 5 km 217 m
(c) 5 m 70 cm
3. (i) 88 m 25 cm
(ii) 478 m 10 cm
(iii) 18 dm 7 cm
(iv) 109 km 527 m
(v) 230 km 362 m
(vi) 99 km 485 m
4. (i) 108 km 247 m
(ii) 6 m 60 cm
(iii) 6 dm 4 cm
(iv) 50 km 600 m 60 cm
(v) 100 km 91 m 25 cm
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