小数的四则混合运算及应用题大全及答案
更新时间:2021-06-23
类型:小学四年级数学题
题数:109
答:
(3.20-2.98)×1000=220(元)
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答:
12.4×100-0.43×100=1194
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答:
(1)原式=3.4+11.4 =14.8(2)原式=10.6-2.96 =7.64(3)原式=120×6.2=744(4)原式=9.3÷0.03 =310(5)原式=13.2÷2.2×0.9 =5.4(6)原式=12×3.9 = 46.8
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答:
河马:(5.98+0.02)÷2=3(吨);海豹:3-0.02=2.98(吨)
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答:
(3.8-1.2×0.5)÷5=0.64
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答:
(1)8.6+3.65+1.4+6.3 =10+10 =220(2)0.46×8.2-0.46×7.2 =0.46×(8.2-7.2) =0.46(3)19.2÷(22-21.7) =19.2÷0.3 =64
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答:
15.6×(6.5-2.4)÷4=15.99
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答:
8.4×5.2+6.3÷2.1=46.88
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答:
5×40.5+280=482.5(千克),280-5×40.5=77.5(千克)
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答:
(2-0.6)×(2+0.6)=3.64
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答:
(1)1.6×(27.75÷1.5) =1.6×18.5 =29.6(2)13.8÷(10-7.6) =13.8÷2.4 =5.75(3)3.2×(4.7+7.8) =3.2×12.5 =40(4)(3.2+0.12)÷0.8 =3.32÷0.8 =4.15
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答:
(1)4.89-2.69+15.4 =2.2+15.4 =17.6(2)2.96÷0.4-1.73 =7.4-1.73 =5.67(3)(4.67+4.93)÷0.8 =9.6÷0.8 =12(4)(12-9.9)×3.2 =2.1×3.2 =6.72
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答:
(1)22.5×(7.8+8.2) =22.5×16 =360(2)13.8-0.416-2.584 =13.8-(0.416+2.584) =10.8(3)1.25×0.25×3.2 =1.25×8×(0.4×0.25) =1(4)71.8×0.9+7.18 =71.8×(0.9+0.1) =71.8(5)7.3×2.4-14×0.73 =7.3&time
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答:
2.4×18+1.8×38=111.6(元)
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答:
二车间:166.9米,三车间:249.6米,128.5+166.9+249.6=545(米)
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答:
(1)22.5×(7.8+8.2) =22.5×16 =390(2)13.8-0.416-2.584 =13.8-3 =10.8(3)1.25×0.25×3.2 =1.25×8×(0.25×0.4) =1(4)71.8×0.9+7.18 =71.8×(0.9+0.1) =718
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答:
(78.2×0.5+78.2×2)×2=78.2×(0.5+2)×2=391(元)
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答:
(2.5+2.5×0.6)×56=2.5×1.6×56=224(元)
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答:
解法一:15.8×52-12.5×52=171.6(元)解法二:(15.8-12.5)×52=171.6(元)
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