48*2.7+16*1.9簡算
48×2.7+16×1.9
=(48÷3)×(2.7×3)+16×1.9
=16×8.1+16×1.9
=16×(8.1+1.9)
=16×10
=160
驗算:48×2.7+16×1.9
=129.6+30.4
=160
簡算:12.34+23.41+34.12+41.23
12.34+23.41+34.12+41.23
=(12+23+34+41)+(0.34+0.41+0.12+0.23)
=100+1
=101
23-17分之12簡算過程
23-12/17
=22+1-12/17
=22+5/17
=22又17分之5
一列數第一個數是15,第二個數是19,第三個數是23,第四個數是27..第N個數是幾
第N個數是4N + 11
簡算(88.9*7+11.1*37)
=88.9*37-88.9*30+11.1*37
=(88.9+11.1)*37-2667
=3700-2667
=1033
*代表乘以.
11.88*41-82*10分之9簡算
11.88*41-2*0.9*41=(11.88-1.8)*40=10.08*40=403.2
1÷(1/6+1/8)怎樣算?54×1/9=?54×8/9=?
(20.2×0.4+7.88)÷4.2能簡算嗎?寫步驟
請問能簡算嗎?幫忙啦.呵呵呵.幫忙的親一個,麼
不能簡算的這數位也不大不複雜啊算一下很快的認真點不要什麼都想著簡單算起來也不複雜3.8
-17+23+|(-16)-(-7)|
-17+23+|(-16)-(-7)| =-17+23+9 =15
能簡算就簡算.9/17÷9+1/9×8/17
9/17÷9+1/9×8/17
=9/17*1/9+1/9*8/17
=1/9*1
=1/9