口算题43条:120+9= 148+37= 45+97= 32+268= 350+470= 199+76= 12+18+14= 25+67+75= 46+49+51= 84+27+73= 100-43= 420-150= 200-82= 175-56= 151-99= 323-195= 760-5-403= 174-48-52= 416-216-78= 520-145-65=60+250=...