20以內連減質量練習例題帶答案姓名：班級：日期：用時：分鐘得分：11-3-7=15-2-4=20-11-8=8-4-3=15-3-3=19-3-3=14-2-8=6-1-1=9-5-2=17-13-3=8-3-3=5-2-2=20-7-11=12-3-5=20-12-4=8-6-1=8-1-5=18-10-8=17-1-13=10-2-4=7-1-2=4-2-2=7-5-2=5-1-1=15-7-8=3-1-1=4-1-1=13-11-1=14-12-1=19-10-6=3-1-1=5-2-3=15-11-4=16-1-8=20-10-10=20-18-1=15-2-1=16-6-6=6-2-2=9-1-6=5-3-2=6-2-2=17-5-2=12-8-4=6-2-2=9-5-1=16-13-3=17-2-2=4-2-2=10-8-2=3-1-2=9-1-3=3-1-1=10-1-1=15-3-10=6-2-1=5-3-2=9-4-4=11-2-6=18-13-2=18-12-3=6-1-3=11-3-7=11-2-9=19-1-11=15-13-1=9-2-3=20-16-3=14-9-4=16-14-2=10-8-1=13-7-6=16-8-3=19-13-3=15-6-9=10-3-2=13-6-6=18-7-5=4-1-1=3-1-2=15-8-2=8-3-5=16-10-1=17-4-1=12-9-1=18-14-4=19-16-2=5-2-3=12-4-7=6-4-2=14-12-1=10-3-5=15-6-8=6-3-2=6-2-3=19-7-1=12-2-1=4-2-2=4-1-3=14-11-2=9-3-6=4-2-1=18-1-16=20-2-17=18-16-2=15-13-1=10-1-4=19-10-3=10-2-5=20-10-8=14-6-2=15-12-2=11-8-1=12-10-1=3-1-1=5-3-1=16-9-4=20-15-1=7-4-1=15-11-1=16-7-3=18-4-2=5-3-2=20-18-1=5-3-1=17-10-7=3-1-2=7-2-5=14-5-2=7-3-2=4-1-1=13-9-1=14-3-4=3-1-2=15-13-1=4-2-1=6-3-2=3-1-2=3-1-2=6-3-1=13-3-1=10-5-4=20-18-1=6-2-2=11-7-1=8-2-1=15-5-3=3-1-1=10-5-3=16-4-10=13-1-8=19-17-2=20-17-1=15-7-7=3-1-1=8-4-1=12-3-5=10-3-3=7-1-5=12-9-1=19-16-1=9-5-4=7-2-5=19-12-4=8-4-1=10-1-7=13-11-1=11-8-2=15-4-2=20-1-8=5-2-3=12-7-1=17-2-15=11-3-1=15-9-4=9-6-3=10-2-1=15-4-2=9-5-1=20-15-1=17-14-1=7-4-1=14-1-6=7-3-3=3-1-1=6-1-3=20-10-3=12-8-3=4-1-1=14-12-2=12-8-2=4-1-2=16-13-1=12-7-2=10-7-2=8-3-1=16-2-7=18-7-5=7-5-1=12-3-6=6-1-1=18-14-2=10-2-5=7-5-1=5-2-1=7-5-2=3-1-2=12-5-1=5-1-2=12-2-7=13-11-2=3-1-2=10-4-4=8-2-3=4-2-2=12-9-3=14-6-1=13-9-3=15-4-5=17-8-1=16-9-2=3-1-1=18-14-4=6-3-2=20-14-4=14-11-3=19-12-5=9-1-8=9-5-3=16-10-2=20-7-13=15-3-1=10-3-3=17-8-7=4-2-1=15-12-1=15-6-3=4-2-2=7-5-2=10-3-2=7-3-4=16-13-2=14-2-10=11-8-3=12-1-1=3-1-2=18-11-3=3-1-2=7-4-2=10-4-4=13-7-6=19-14-4=8-3-1=17-9-5=10-7-2=3-1-1=10-5-1=13-1-12=8-4-2=7-3-4=10-8-2=19-4-13=12-10-2=7-3-3=16-3-6=7-4-2=16-5-6=20-5-15=8-3-2=8-6-2=8-1-7=6-2-1=14-11-3=17-4-9=10-5-1=14-1-4=15-9-1=14-11-2=4-1-2=15-6-8=18-3-15=14-8-6=6-1-2=8-5-3=7-3-2=14-9-1=11-7-2=11-4-1=14-7-6=17-3-12=17-14-2=20-4-13=16-7-6=10-8-2=16-6-2=9-6-2=17-14-3=12-7-3=13-6-3=20-11-8=8-3-2=6-3-1=9-6-2=12-2-8=19-4-3=8-6-2=20-5-3=4-2-2=17-6-3=3-1-1=7-4-3=18-3-4=19-14-5=20-18-2=10-1-7=10-7-1=15-10-3=17-15-1=14-7-6=17-11-5=7-4-3=10-4-5=14-4-3=13-1-6=10-3-2=17-5-10=19-3-9=5-3-1=10-7-3=3-1-1=7-1-1=14-11-2=4-2-2=11-8-3=3-1-2=4-1-1=3-1-2=12-7-3=14-11-3=11-7-1=14-9-1=16-11-1=15-6-3=12-2-7=5-2-3=7-5-1=9-4-1=11-3-2=12-10-2=11-7-4=16-5-11=18-12-5=8-3-3=15-13-1=3-1-1=18-6-1=9-5-3=19-15-4=15-10-4=20-12-4=7-1-5=10-4-2=5-3-2=15-3-2=16-8-5=16-6-9=5-3-2=17-9-5=12-3-6=3-1-2=5-3-2=13-1-10=14-8-3=5-2-1=20-3-17=5-3-1=14-3-6=12-3-5=9-4-5=11-1-4=16-13-2=20-15-2=9-4-4=4-1-2=8-3-4=14-9-2=12-6-1=6-2-1=18-16-2=4-1-1=14-9-4=9-2-3=15-11-1=12-1-11=13-7-5=14-1-4=7-2-2=5-2-2=15-5-1=13-11-2=12-10-2=10-6-2=7-5-2=15-11-4=9-6-2=14-9-3=9-4-2=3-1-2=4-2-2=19-4-15=7-3-1=4-2-2=20-17-3=17-14-3=3-1-1=7-2-5=14-4-9=15-11-4=11-8-2=11-7-1=5-3-2=19-11-5=11-9-1=8-2-4=3-1-2=19-13-1=13-2-1=12-1-9=3-1-1=9-5-2=6-2-3=8-2-5=9-7-1=18-8-3=7-1-4=11-3-8=13-5-4=17-6-4=14-5-6=11-6-1=15-4-7=6-3-3=11-5-3=3-1-2=3-1-1=5-3-2=17-10-5=13-7-3=18-11-7=13-3-9=3-1-1=5-3-2=12-9-1=15-7-4=7-2-3=12-5-1=7-4-1=15-8-4=7-2-3=18-13-5=15-11-4=14-2-10=11-2-8=19-1-10=6-2-4=17-6-11=11-8-2=5-3-2=13-4-1=19-4-2=9-4-3=8-2-3=19-16-3=6-3-1=14-1-3=5-3-2=20-1-4=4-2-2=5-1-3=12-7-1=8-3-2=17-4-8=17-11-4=8-5-2=10-1-9=16-8-7=15-10-1=9-3-3=20-2-1=10-6-1=11-6-5=13-1-10=3-1-1=14-8-6=5-2-2=8-3-2=9-6-3=13-11-1=5-1-3=12-5-6=15-8-3=3-1-1=16-10-3=8-3-2=14-1-1=5-3-1=7-5-2=7-2-4=11-4-3=7-2-4=17-14-2=20-17-3=12-2-3=20-8-1=16-2-1=18-10-8=8-3-5=19-8-5=6-3-2=11-5-3=9-3-3=3-1-1=15-10-4=3-1-2=19-13-5=9-5-1=4-2-1=14-7-6=9-6-3=6-4-2=19-16-1=11-5-1=9-4-2=4-1-1=10-3-1=3-1-2=6-2-3=10-2-3=12-5-7=7-1-4=6-4-2=5-3-1=17-7-5=10-6-2=14-3-6=5-3-2=7-2-1=11-9-1=8-3-5=9-5-2=5-2-2=8-2-1=6-2-1=3-1-1=5-1-3=12-10-1=15-11-3=17-8-1=8-6-1=8-1-5=14-9-1=6-3-1=11-8-2=15-4-10=11-6-2=14-7-2=17-9-7=18-12-4=19-1-4=19-8-2=11-5-3=9-7-2=4-2-1=3-1-1=18-1-13=12-9-1=11-2-2=20-7-6=8-1-4=15-11-2=9-3-6=14-2-8=5-3-1=15-12-3=19-13-5=4-2-2=4-1-2=10-3-2=20-4-16=3-1-1=4-1-3=19-7-2=5-2-3=13-10-1=8-4-1=15-13-2=4-1-2=17-2-13=16-5-5=7-1-6=18-11-5=20-10-2=10-3-1=13-6-3=18-14-3=13-7-4=15-7-7=16-8-1=13-4-3=18-10-6=8-6-2=3-1-1=8-5-1=9-2-7=4-1-1=17-13-1=9-5-2=11-1-1=6-2-4=17-5-7=13-4-8=18-11-1=18-12-3=8-3-2=14-2-5=10-6-1=15-3-1=17-10-4=5-1-3=11-8-2=7-2-5=5-2-2=9-3-3=4-1-1=10-8-1=4-2-2=12-6-5=12-4-8=3-1-2=3-1-1=15-1-9=7-5-1=6-3-1=5-3-1=3-1-2=10-8-1=5-1-3=14-6-5=3-1-2=8-1-6=14-12-2=17-14-1=5-3-2=8-1-6=12-1-1=4-2-1=9-6-2=5-2-3=6-2-3=15-8-2=20-5-8=20-10-9=18-2-9=20-2-13=17-7-5=11-5-2=13-6-5=15-8-1=10-3-4=20-8-6=14-8-2=18-15-2=18-6-9=13-11-1=20-13-6=10-7-1=17-4-4=18-6-6=5-2-1=5-2-2=5-2-2=20-6-11=9-1-3=3-1-2=5-1-2=4-2-2=15-10-4=11-5-5=5-1-3=19-16-3=13-1-1=10-8-2=13-11-2=19-1-9=11-4-2=14-4-5=9-2-6=7-4-2=13-9-2=9-1-3=15-7-4=12-6-1=20-8-1=4-2-1=14-7-7=19-2-8=3-1-2=9-4-1=17-2-15=16-10-3=4-2-1=17-6-4=11-3-7=18-8-10=8-6-1=4-1-3=19-12-7=18-9-4=19-13-4=15-9-5=18-1-3=18-13-2=14-10-3=20-9-5=12-7-4=11-1-7=5-2-3=17-4-2=12-1-4=6-1-2=11-3-5=14-9-3=5-1-2=11-8-1=14-12-1=14-12-1=12-6-5=8-4-3=6-4-2=15-4-11=5-3-2=15-9-4=12-3-3=17-12-2=11-9-2=17-7-9=7-2-4=4-1-3=18-9-8=11-7-3=12-4-6=5-2-1=15-6-9=19-9-10=9-2-3=17-11-4=14-5-6=15-5-4=18-6-8=6-2-2=12-6-1=20-16-4=5-2-2=5-3-2=20-18-1=20-2-8=8-5-1=5-2-2=20-3-14=9-3-6=8-4-4=17-1-16=4-1-1=20-13-4=18-12-6=7-2-1=17-2-10=20-13-5=10-1-4=19-7-9=18-11-1=5-1-3=16-13-3=20-3-17=4-1-2=3-1-1=11-3-1=5-3-1=20-14-4=9-5-4=11-6-3=18-11-5=4-1-1=7-1-1=16-13-2=11-5-5=11-9-1=15-9-2=20-6-14=4-2-1=5-1-3=18-3-4=4-1-3=4-2-1=14-5-3=6-4-1=19-9-6=20-18-2=10-2-7=18-10-6=12-8-3=17-9-4=15-4-9=7-4-1=19-17-1=13-11-2=17-5-12=3-1-2=15-7-2=8-6-1=10-5-5=7-3-4=18-3-5=13-8-5=15-11-1=15-9-6=5-2-3=4-2-2=9-6-1=6-4-2=10-1-5=20-7-3=17-13-3=17-11-6=3-1-1=8-5-1=6-3-3=19-11-8=10-1-1=19-15-1=3-1-2=14-11-3=8-3-2=13-5-3=5-1-2=16-7-6=11-7-3=9-3-2=6-4-2=4-2-2=10-8-2=10-5-5=6-2-2=13-2-4=15-13-2=19-6-2=9-2-6=20-14-6=4-1-2=8-1-7=5-1-1=12-10-1=20-4-9=3-1-2=12-9-1=10-8-1=4-2-1=11-4-5=3-1-2=12-9-3=16-3-4=4-2-1=18-2-12=11-4-7=10-4-4=9-4-3=7-3-4=12-3-7=6-4-2=9-1-1=4-2-2=19-13-3=6-4-2=8-3-5=14-7-7=19-7-9=3-1-2=9-