简算题,

问题描述:

简算题,
1.28×29+36×29+64×71
2.1328×1239-739×661-739×667
3.44327+22345+17252+49414+23212+43454+36987+29679
4.9÷13+13÷9+11÷13+14÷9+6÷13
5.(51×68×78)÷(17×34×13)
6.11÷17+17÷19+20÷17+40÷19+37÷17
(注:一定要用简算!对的我会+分)

29*(28+36)+64*71=64*(29+71)=64*100=64001328*1239-739*(661+667)=1328*(1239-739)=1328*500=664000(9+11+6)/13+(13+14)/9=26/13+27/9=2+3=5(51/17)*(68/34)*(78/13)=3*2*6=36(11+20+37)/17+(...