分数:用时:日期:(1)53-(47-40)= (18) 69-16+19= (35) 83+(15-5)=(2)51-(10-2)=(19) 55+9-33= (36) 16-(8+2)=(3)52-(16-8)=(20) 49+1-13= (37) 19-(4-2)=(4)32+(45-5)=(21) 75+2-17= (38) 25-(11-5)=(5)19-(3+7)=(22) 63+10-8= (39) 71-(49+1)=(6)65-(64-60)= (23) 64+12-17= (40) 54-(36-30)=(7)83+(15-5)=(24) 31+62+2= (41) 30-(19-9)=(8)16-(8+2)=(25) 67-44+10= (42) 25-(15-9)=(9)24-(14+6)=(26) 93-31+18= (43) 19-(16-8)=(10)77-(5+35)=(27) 68+18+2= (44) 42-(20-10)=(11)45-(85-80)= (28) 87-57-9= (45) 40-(62-60)=(12)25-(7-6)=(29) 39+29+23= (46) 26+(27-7)=(13)6-(3-1)=(30) 71+11+8= (47) 86-(49-9)=(14)42-(26+4)=(31) 73-49-22= (48) 24-(6+4)=(15)91-(86-6)=(32) 70-32-18= (49) 10+(75-70)=(16)20-(19+1)=(33) 74+11-7= (50) 37-(14+6)=(17)50+(11-10)= (34) 97-24-17= (51) 37+(44+6)=口算天天练1分数:用时:日期:(1)76-45+47= (18) 56+(35-5)=(35) 71-(32+8)