人教版小学数学知识点总归纳

2
25 3=75 25 4=100 25 8=200
125 3=375
125 4=500 125 8=1000 625 16=10000 37 3=111
3 112=121 172=289 402=1600 352=1225
122=144 182=324 502=2500 452=2025
132=169 192=361 602=3600 552=3025
=
V=a a a
3
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9
9
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4( 25)
:16 404 1256
4 ,50 325 500 1675
25
8( 125)
8( 125)
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5000 12344
8 ,1125 13375 5000
125
2
2
0
2
1
,
(
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:2 3 5 7 11 13 17
(30 ) :4\6\9\11
2 28
2 29
365
366
1 =24 1 =60
1 =60 1 =3600
1 =1 1 =100
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4
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=源自文库
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3.14 1=3.14 3.14×2=6.28 3.14×3=9.42 3.14×4=12.56 3.14×5=15.7
3.15×6=18.84 3.14×7=2198 3.14×8=25.12 3.14×9=28.26
19 23 29 31 37 41 43 47 53 59) 61 67 71 73 79 83 89 97
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2 4 6 8 10 12 14 16 18...
142=196 102=100 702=4900 652=4225
152=225 202=400 802=6400 752=5625
162=256 302=900 252=625 852=7225
4
1/2=0.5 1/4=0.25
3/4=0.75
1/5=0.2 2/5=0.4
3/5=0.6
4/5=0.81/8=0.125
3/8=0.375 5/8=0.625 7/8=0.875
1/20=0.05 3/20=0.15 7/20=0.35 9/20=0.45 11/20=0.551/25=0.04
2/25=0.08
5 13=1 63-=216
23=8 73=343
33=27 43=64 83=512 93=729
53=125 103=1000
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