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電子課本網(wǎng) 第52頁

第52頁

信息發(fā)布者:
3
3
10
51
51
100
267
267
1000
=
=
0.7
?$\frac {7}{10}$?
0.63
?$\frac {63}{100}$?
0.75
?$\frac {45}{60}$?
?$=\frac {9}{10}$?
?$=\frac {73}{100}$?
?$=\frac {653}{1000}$?
?$=\frac {3}{100}$?
?$=\frac {31}{10}$?
?$=\frac {427}{100}$?
=0.375
≈0.571
=1.6
≈0.417
=1.6875
≈0.778
?$\frac {1}{10}$?
?$\frac {3}{10}$?
?$\frac {7}{10}$?
?$\frac {9}{10}$?
0.1
0.3
0.7
0.9
?$\frac 13≈0.33$?
?$\frac {3}{10}=0.3$?
?$\frac 13>0.31>\frac {3}{10}$?
答:磊磊跑得最快。
?$13÷10=1.3($?千克)
?$\frac 76$?千克?$≈1.167$?千克
?$1\frac 38=1.375$?千克
?$1.375>1.3>1.167$?
答:第三組平均每人采集的樹種最多。
?$\frac {5}{13}=0.384615384615……$?
?$200÷6=33($?個(gè)?$)……2($?個(gè))
?$(3+8+4+6+1+5)×33+3+8=902$?
答:小數(shù)部分前?$200$?個(gè)數(shù)字的和是?$902。$?