Add Tenths & Add Hundredths using Base 10 Blocks 4-113
Use Base 10 blocks to add tenths and hundredths. What's 8/10 + 1/10? If a flat is 1, a rod is 1/10. 8 rods + 1 rod = 9 rods, so 8/10 + 1/10 = 9/10. What's 29/100 + 11/100? Since a square is 1/100, 29 squares + 11 squares = 40 squares, and 29/100 + 11/100 = 40/100. Add fractions by thinking in units of tenths and hundredths.
