时间:分数8+()=1415-(:)=99+()=1712-()=36+()=129-()=512-()=418-()=126+()=1311-()=419=7+()12+()=1710-(:)=87+()=158+()=1719-()=816-()=210+()=156=17-()15-()=67+()=1319-()=138+()=127+()=186+()=1917-()=710+()=1511=()-712-()=413-()=56+()=108+()=197+()=166+()=178+()=18()+11=15()+8=15()+12=19()+8=10()+9=18()-9=11()-13=513-()=8()-5=11()-11=8()+12=16()+7=187+()=15()+7=17()+10=168+()=1510+()=149+()=1918=6+()6+()=16()-13=3()-6=12()-12=3()-10=6()-5=119+()=1811+()=1710+()=177+()=168+()=157+()=199+()=168+()=137+()=186+()=19()-12=7()-4=137=()-12()-16=4()-10=916=7+()9+()=177+()=146+()=158+()=13()+8=19()+8=18(:)+9=17()+9=18()+11=19()+9=10(:)+8=1412=()+7()+7=10()+10=1616-()=47-()=411-()=714-()=612-()=4()-13=6()-6=11()-15=4()-7=10()-11=820 以内加减法练习题(2)时间:分数17-()=59()7+412-3()88+()=1211-()=53+11()1211+()=17()-4=11()-