Addition of measures
Addition without Regrouping
Add 21m 45cm and 68m 23cm.
step.1 Start from cm :(45+23)cm = 68cm
write 68 under the Centimetre column.
Step.2 Then add m : 21m + 68m = 89m
Write 89 under the metre column.
21m 45cm + 68m 23cm = 89m 68cm
Addition with Regrouping
Add 34m 91cm + 25m 42cm
Step 1: Start from cm 91cm + 42cm = 133cm
In 133cm, write 33 under cm column and then add this 1cm to the metre column.
Step 2: Add 1m + 34m + 25m = 60m
34m 91cm + 25m 42cm = 60m 33cm