①
②
③
④
⑤
⑥
⑴56×25×4 ⑵(125 - 40)×80
⑶37×199 + 37 ⑷79×125
①44×25
②146-47-53
③48×101-48
④43×201
⑤65+65×99
⑥125×32×25
①879-(179+97)
②629-128-72
③9+99+999+9999
④76×99+76
⑤373×36-36×73
⑥99×56