给我200道六年级数学递等式的题
给我200道六年级数学递等式的题
给我200道六年级数学递等式的题
给我200道六年级数学递等式的题
0.64×25×7.8+2.2 =0.16*4*25*7.8+2.2 =0.16*100*7.8+2.2 =16*7.8+2.2 =127 2÷2.5+2.5÷2 =4/5+5/4 =2.05 194－64.8÷1.8×0.9 =194-36*0.9 =194-32.4 =161.6 36.72÷4.25×9.9 =8.64*9.9 =85.536 5180－705×6 =5180-4230 =950 24÷2.4－2.5×0.8 =10-2 =8 (4121+2389)÷7 =6510/7 =930 671×15-974 =10065-974 =9091 469×12+1492 =5628+1492 =7120 405×(3213-3189) =405*24 =9720 1.原式=16/25*25*39/5+2.2 =16*39/5+2.2 =127 2.原式=2÷5/2+5/2*1/2 =4/5+5/4 =0.8+1.25 =2.05 3.原式=194-64.8÷(1.8÷0.9) =194-32.4 =161.6 4.原式=36.72÷17/4*9.9 =36.72*4/17*9.9 =8.64*9.9 =85.536 5.原式=5180-4230 =950 6.原式=10-2 =8 7.原式=6510÷7 =930 8.原式=10065-974 =9091 9.原式=5628+1492 =7120 10.原式=405*24 =9720 0.64*25*7.8+2.2 =4*25*.16*7.8+2.2 =100*.16*7.8+2.2 =16*7.8+2.2 =124.8+2.2 127 2、2/2.5+2.5/2 =.8+1.25 =2.05 10除于5/9+1/6X4(要用递等式~) = 10×9/5+4/6 = 18+2/3 = 18又2/3 7/9除于11/5+2/9X5/11 = 7/9×5/11+2/9×5/11 =（7/9+2/9）×5/11 = 1×5/11 ＝5/11 (1/12+1/2-7/12)除于1/7 ＝ (1/12+1/2-7/12)×7 = 1/12×7+1/2×7-7/12×7 = 7/12+7/2-49/12 ＝3又1/2 1/6+4/5×5/6=1/6+2/3=5/6 3-3/2×10/21-2/7 (1/2-1/3+1/6）×24=0 4/5×5/8+1/2)÷3/4=4/3