六年级下册54页—55页数学补充习题答案就是你
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54页:
1: 3/8 12 1/2
9/20 36 2/3
2/5 1/6 1/100
2: 5/12+2/3×3/4 3÷(5/7-3/14) (28+2/7×7/8)×1/4
=5/12+1/2 =3÷(10/14-3/14) =(28+1/4)×1/4
=5/12+6/12 =3÷1/2 =28×1/4+1/4×1/4
=11/12 =6 =7又1/16
3: (3/5+1/3)×15 7/13×4/5+6/13÷5/4
=3/5×15+1/3×15 = 7/13×4/5+6/13×4/5
=9+5 =4/5×(7/13+6/13)
=14 =4/5×1
=4/5
(7/24-3/16)÷1/8 9/5-(2/5÷1/2+3/7)
= (7/24-3/16)×8 = 9/5-(2/5×2+3/7)
=7/24×8-3/16×8 =9/5-(4/5+3/7)
=7/3-3/2 =9/5-4/5-3/7
=5/6 =4/7
55页:
4: 15×4/5÷3
=15×4/5×1/3
=4
5: 3/4×1/6×400
=50
6: 3/10÷3/20
=3/10×20/3
=2
2-3/10=17/10
7: 3/2×1/2=3/4
3/4+3/2
=3/4+6/4
=9/4
1: 3/8 12 1/2
9/20 36 2/3
2/5 1/6 1/100
2: 5/12+2/3×3/4 3÷(5/7-3/14) (28+2/7×7/8)×1/4
=5/12+1/2 =3÷(10/14-3/14) =(28+1/4)×1/4
=5/12+6/12 =3÷1/2 =28×1/4+1/4×1/4
=11/12 =6 =7又1/16
3: (3/5+1/3)×15 7/13×4/5+6/13÷5/4
=3/5×15+1/3×15 = 7/13×4/5+6/13×4/5
=9+5 =4/5×(7/13+6/13)
=14 =4/5×1
=4/5
(7/24-3/16)÷1/8 9/5-(2/5÷1/2+3/7)
= (7/24-3/16)×8 = 9/5-(2/5×2+3/7)
=7/24×8-3/16×8 =9/5-(4/5+3/7)
=7/3-3/2 =9/5-4/5-3/7
=5/6 =4/7
55页:
4: 15×4/5÷3
=15×4/5×1/3
=4
5: 3/4×1/6×400
=50
6: 3/10÷3/20
=3/10×20/3
=2
2-3/10=17/10
7: 3/2×1/2=3/4
3/4+3/2
=3/4+6/4
=9/4
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