小学一年级口算题：口算测试1 90-9= 24-10-7= 46+5= 20+13-9= 8+57= 34+(25+5)= 98-70= 58-(58-8)= 65+20= 39+7-20= 25+7= 50-8= 86-5= 4+65= 20+67= 42+30= 73-40= 85-7= 8+45= 76-60= 65-47= 28+54= 68+29= 92-46= 36+57= 70-25= 58+16=
