2.2*8.5的简便运算
2.2×8.5简便计算 -
2.2×8.5 =(2+0.2)×8.5 =2×8.5+0.2×8.5 =17+1.7 =18.7
原式=2.02x8.5 =(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17
2.2×8.5 =(2+0.2)×8.5 =2×8.5+0.2×8.5 =17+1.7 =18.7
原式=2.02x8.5 =(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17
19.36
17
小数乘法简便运算50道带答案 -
小数乘法简便运算50道带答案 159-57-43 59 12×8.9 106.8 6×0.88-6×0.12 4.56 6.13×94+6.13×6 613 180÷48÷2.5 0.15 5.4×398 2149.2 40÷8÷12.5 0.4 90.6-(8+20.6) 62 6×16×1.25 120 67.5÷9÷1.25 6 1.5+29.4+8.5=39.4 还有呢?
1.5+8.5x2.2 =1.5+8.5X2X1.1 =1.5+17x1.1 =1.5+18.7 =20.2
如何简算小数乘法? -
小学五年级小数简便运算1)3643-74+6357-76 (2)39×24+39×46+39×30 (3)108×35 (4)345×98 (5)25×64×125×5 (6)8500÷25 (7)94×73+27×94 (8)125×79 (9)1.2×99 (10)9÷0.25 (11)4.7×5.9+5.2×4.7-4.7×0.1 (12)3.6×2.4+36×0.76 (13)(3.25×7+3.25)×0.125 (14)37.5到此结束了?。
5.43-3.06=2.37 3+1.2=4.2 0.12+5=5.12 1.2+1.8+1.4=4.4 6.2+16+3.8=26 14-0.6=13.4 20.3-8=12.3 50-1.5+4= 53.5 175-0.56=174.44 2.08+11=13.089 0.4+20= 20.4 2.5+67+7.5=77 4.5-3=1.5 25-0.38=1.62 5.4说完了。
简便运算题大全1000题? -
3.12×5/6–2/9×3 4.8×5/4+1/4 5.6÷3/8–3/8÷6五年级简便运算500道。×5/9+3/7×5/9 -(3/2+4/5)简便计算题五年级上册。(1/8+1/9)9.9×5/6+5/6 ×8/9-1/3 11.7×5/49+3/14 12.6×(1/2+2/3)13.8×4/5+8×11/5六年级简便运算100道带答案等我继续说。
8.5x5.2-8.5x2.2 =8.5x(5.2-2.2)8.5x3 =25.5 根据乘法分配律:是指两个数的和与一个数相乘,可以先把它们分别与这个数相乘,再相加;a×c+b×c=(a+b)×c。