1个回答
① 2/11×5=10/11
② 7/33×3/14=1/22
③ 5/12×8=10/3
④ 5/42×7=5/6
⑤ 1/6×10=5/3
⑥ 11/16×12=33/4
⑦ 1/10×7=7/10
⑧ 5×2/15=2/3
⑨8×1/16=1/2
⑩ 7×2/21=2/3
① 2/11×5=10/11
② 7/33×3/14=1/22
③ 5/12×8=10/3
④ 5/42×7=5/6
⑤ 1/6×10=5/3
⑥ 11/16×12=33/4
⑦ 1/10×7=7/10
⑧ 5×2/15=2/3
⑨8×1/16=1/2
⑩ 7×2/21=2/3