问题 填空题

埴一填.

18+12=12+______

36×42+36×58=______×(______+______)

2×9×5=2×______×9

(25+9)×4=______×______+______×______

8×(5×9)=8×______×______

93+84+16=______+(______+______)

答案

18+12=12+18

36×42+36×58=36×( 42+58)

2×9×5=2×5×9

(25+9)×4=25×4+9×4

8×(5×9)=8×5×9

93+84+16=93+( 84+16)

故答案为:18,36,42,58,5,25,4,9,4,5,9,93,84,16.

单项选择题
单项选择题