1.小數數位相同的加減法（豎式計算）27.38+4.83=26.75+2.83=3.64-2.58=6.52-3.44=15.31+13.51=9.03-8.57=5.5+4.5=3.27-2.49=11.65-7.39=19.01-7.99=7.51+0.49=9.03-8.57=5.48-3.25=4.8+18.9=10.3+58.7=8.03-4.56=8.25+1.55=9.43-9.05=1.75+2.08=4.28-3.37=4.13+2.24=5.16+7.89=4.17+2.53=5.07-0.98=5.67-0.73=13.18+5.27=2.小數數位不同的加減法26.8+3.02=6.07-4.993=3.7+2.36=15.4+2.97=10.2-8.75=12.7+6.58=7.3-2.25=3.8+3.54=3.05-2.9=3.1-2.07=7.81-3.735=12.16+5.347=0.4-0.125=18.7+3.96=9.6+4.78=62.1-17.07=5.67-0.845=0.506-0.19=11.04-7.3=1.4-0.405=1.4-0.405=3.906+0.66=43.5-27.34=15.98-3.9=75.6-3.55=10.1-0.55=5.94+10.7=12.03+0.875=37.8+3.02=0.704-0.25=3.整數與小數的加減法10+10.1=27+8.03=26+7.98=13.99+1=7.88+2=3.57+3=28-3.56=10-0.81=10-0.36=20-0.92=8-7.089=45.45-45=95-9.85=20-9.42=35.09-11=96.85-85=10-0.41=45-0.45=4.小數加減5.03-2.5=22.8-5.23=23.66+4.34=3.52-4.66=5.6-0.81=15.9+3.26=67.2+41.5=50-28.5=10.75+0.4=16.23+8.92=13.79-9.653=1.5+0.68=72.8-8.6=5.16+7.89=15.98-3.9=5.07+6.13=小數數位相同的加減法27.38+4.83=26.75+2.83=3.64-2.58=6.52-3.44=15.31+13.51=7.51+0.49=5.5+4.5=3.27-2.49=11.65-7.39=19.01-7.99=5.48-3.25=4.8+18.9=10.3+58.7=8.03-4.56=9.03-8.57=4.13+2.24=8.25+1.55=9.43-9.05=1.75+2.08=4.28-3.37=4.17+2.53=5.07-0.98=5.67-0.73=13.18+5.27=2.小數數位不同的加減法26.8+3.02=6.07-4.993=3.7+2.36=15.4+2.97=10.2-8.75=12.7+6.58=7.3-2.25=3.8+3.54=3.05-2.9=3.1-2.07=7.81-3.735=12.16+5.347=0.4-0.125=18.7+3.96=9.6+4.78=62.1-17.07=5.67-0.845=0.506-0.19=11.04-7.3=1.4-0.405=1.4-0.405=3.906+0.66=43.5-27.34=15.98-3.9=75.6-3.55=10.1-0.55=5.94+10.7=12.03+0.875=37.8+3.02=0.704-0.25=3.整數與小數的加減法（豎式計算）10+10.1=27+8.03=26+7.98=13.99+1=7.88+2=8-7.089=28-3.56=10-0.81=10-0.36=20-0.92=95-9.85=20-9.42=35.09-11=96.85-85=10-0.41=45-0.45=3.57+3=45.45-45=4.小數加減混合運算5.03-2.5=22.8-5.23=23.66+4.34=4.66-3.82=5.6-0.81=15.9+3.26=67.2+41.5=72.8-8.6=10.75+0.4=