A.扩大为原来的3倍 | B.不变 | C.扩大为原来的6倍 |
A.456 | B.4560 | C.45600 |
A.3,6,9,12,15 |
B.15,18,21,24,27 |
C.8,10,12,14,16 |
D.5,8,11,14,17 |
⑴40×40= | ⑵91×50= | ⑶22×30= | ⑷200×40= | ⑸50×60= |
⑹20×80= | ⑺11×70= | ⑻80×20= | ⑼40×90= | ⑽50×30= |
⑴83×26= | ⑵33×66= | ⑶84×59= | ⑷26×47= |
⑸54×25= | ⑹21×44= | ⑺66×77= | ⑻19×36= |