题目
直接写得数
1+3.48= 2.6+4= 0.9-0.45= 99×36=
+ = - = + = + - =
- = + = 1- - = - + =
答案:1+3.48=4.48 2.6+4=6.6 0.9-0.45=0.45 99×36=3564 18 + 58 =34 12 - 13 = 16 14 + 12 =34 710 + 110 - 310 =12 913 - 513 =413 1126 + 926 =1013 1- 821 - 221 =1121 916 - 516 + 316 =716