Add Tenths & Hundredths by Renaming, using Base 10 Blocks 4-114
Use Base 10 blocks to rename and add tenths to hundredths. What's 2/10 + 53/100? The denominators are not the same, so make hundredths – a common unit. If a flat is 1, each vertical column or rod is 1/10, and each square is 1/100. Since 2/10 is 2 columns, 20 squares, and 20/100, 2/10 + 53/100 = 20/100 + 53/100 = 73/100.
