问题 解答题 直接写出得数.299+198=1236-998=1112+56=910-1115=4×47=316÷13=(0.25+34)×4=1÷(2.1-2.09)=0.9×99+0.9=2.4+23-25= 答案 299+198=497,1236-998=238,1112+56=74,910-1115=16,4×47=167,316÷13=916,(0.25+34)×4=4,1÷(2.1-2.09)=100,0.9×99+0.9=90,2.4+23-25=223.故答案为:497,238,74,16,167,916,4,100,90,223.