口算题：（每天10题）（1）8.42＋9.48＝42.56＋3.124＝91.26－30.35＝15.6十0.237＝80－52.l＝7.35—1.41＝2.6＋l.4＝1.9＋0.8l＝0.58＋0.42＝1.63—1.23＝（2）10-0.41=45-0.45=3.57+3=6.14+3.83=7.93-1.64=5.23-2.36=2.6＋l.4＝1.9＋0.8l＝0.58＋0.42＝1.63—1.23＝（3）3.44+3.36=7.74-5.85=9.35-4.74=38.63-3.48=1.16+4.77=8.17-5.26=2.6＋l.4＝1.9＋0.8l＝0.58＋0.42＝1.63—1.23＝（4）2.26-0.86=4.93+4.75=76.55+4.68=31.1+4.5=31.9+3.4=3.45+4.6=0.9－0.25＝9.9—0.01＝4—2.3＝3.2一1.7＝（5）4.45+54.5=3.83+5.55=2.75+1.3=39.4-2.75=67.3-1.26=61.9+6.2=2.6＋l.4＝1.9＋0.8l＝0.58＋0.42＝1.63—1.23＝（6）67.1-6.6=46.8-2.8=47.6-2.15=10-0.41=45-0.45=3.57+3=2.6＋l.4＝1.9＋0.8l＝0.58＋0.42＝1.63—1.23＝（7）27.38+4.83=26.75+2.83=3.64-2.58=6.52-3.44=15.31+13.51=5.5+4.5=3.27-2.49=11.65-7.39=19.01-7.99=7.51+0.49=（8）5.48-3.25=4.8+18.9=10.3+58.7=8.03-4.56=9.03-8.57=8.25+1.55=9.43-9.05=1.75+2.08=4.28-3.37=4.13+2.24=（9）4.17+2.53=5.07-0.98=5.67-0.73=13.18+5.27=5.16+7.89=26.8+3.02=6.07-4.993=3.7+2.36=15.4+2.97=10.2-8.75=（10）7.3-2.25=3.8+3.54=3.05-2.9=3.1-2.07=12.7+6.58=7.81-3.735=12.16+5.347=0.4-0.125=18.7+3.96=9.6+4.78=（11）5.67-0.845=0.506-0.19=11.04-7.3=1.4-0.405=62.1-17.07=1.4-0.405=3.906+0.66=43.5-27.34=15.98-3.9=75.6-3.55=\n（12）5.94+10.7=12.03+0.875=37.8+3.02=0.704-0.25=10.1-0.55=10+10.1=27+8.03=26+7.98=13.99+1=7.88+2=（13）28-3.56=10-0.81=10-0.36=20-0.92=8-7.089=95-9.85=20-9.42=35.09-11=96.85-85=45.45-45=（14）27.38+4.83=26.75+2.83=3.64-2.58=6.52-3.44=15.31+13.51=5.5+4.5=3.27-2.49=11.65-7.39=19.01-7.99=7.51+0.49=（15）5.48-3.25=4.8+18.9=10.3+58.7=8.03-4.56=9.03-8.57=8.25+1.55=9.43-9.05=1.75+2.08=4.28-3.37=4.13+2.24=（16）4.17+2.53=5.07-0.98=5.67-0.73=13.18+5.27=5.16+7.89=26.8+3.02=6.07-4.993=3.7+2.36=15.4+2.97=10.2-8.75=（17）7.3-2.25=3.8+3.54=3.05-2.9=3.1-2.07=12.7+6.58=7.81-3.735=12.16+5.347=0.4-0.125=18.7+3.96=9.6+4.78=（18）5.67-0.845=0.506-0.19=11.04-7.3=1.4-0.405=62.1-17.07=1.4-0.405=3.906+0.66=43.5-27.34=15.98-3.9=75.6-3.55=（19）5.94+10.7=12.03+0.875=37.8+3.02=0.704-0.25=10.1-0.55=10+10.1=27+8.03=26+7.98=13.99+1=7.88+2=（20）28-3.56=10-0.81=10-0.36=20-0.92=8-7.089=95-9.85=20-9.42=35.09-11=96.85-85=45.45-45=7.05－0.05＝0.78—0.38＝3.5十5.5＝5.5—3.9＝