Thực hiện phép tính: a. (9/16 −5/8 +3/4) : 11/32 b. 1000/1009 * −2018/2019
Giải thích
a. Ta có:
916−58+34:1132=9−10+1216.3211=1116.3211=2
b. Ta có
10001009.−20182019+192018.−20182019+12020=−2018201910001009+192018+12020=−20182019.2000+192018+12020=−20182019.20192018+12020=−1+12020=−20192020