五年级都是脱式计算题1）25%*132+1/4*8 2)32*0.125*25
=1/4*132+1/4*8 =(4+8)*0.125*25
=1/4*(132+8) =(4*25)*(8*0.125)
=1/4*140 =100*1
=35 =1000
3)75%*76+25*4+0.75*12
=3/4*76+3/4*12+25*4
=3/4*88+100
=166
4)3200*1/8÷2/5+1270 5)(2/3+4/5)*7/6
=400*5/2+1270 =22/15*7/6
=1000+1270 =77/45
=2270
5)6*(1/2+2/3) 6)132*(44÷176)
=6*1/2+6*2/3 =132*1/4 =33
=3+41.3/7 × 49/9 - 4/3=7/3-4/3=3/3=1
2.8/9 × 15/36 + 1/27=10/27+1/27=11/27
3.12× 5/6 – 2/9 ×3=10-2/3=30/3-2/3=28/3
4.8× 5/4 + 1/4=10+1/4=40/4+1/4=41/4
5.6÷ 3/8 – 3/8 ÷6=6*8/3-3/8*1/6=16-1/16=155/16
6.4/7 × 5/9 + 3/7 × 5/9=1/7*（4*5/9+3）=1/7*47/9=47/63
7.5/2 -（ 3/2 + 4/5 ）=5/2-3/2-4/5=1-4/5=5/5-4/5=1/5
8.7/8 + （ 1/8 + 1/9 ）=7/8+1/8+1/9=1+1/9=10/9
9.9 × 5/6 + 5/6=（9+1）*5/6=50/6
10.3/4 × 8/9 - 1/3=（3/4*8/3-1）*1/3=1*1/3=1/3
11.7 × 5/49 + 3/14=（7*5/7+3/2）*1/7=13/14
12.6 ×（ 1/2 + 2/3 ）=3+4=7
13.8 × 4/5 + 8 × 11/5=8*（4/5+11/5）=8*3=24
14.31 × 5/6 – 5/6=（31-1）*5/6=25
15.9/7 - （ 2/7 – 10/21 ）=9/7-2/7+10/21=1+10/21=31/21
=7