0.51÷17＝0.03 32.8＋19＝51.8 5.2÷1.3＝4 1.6×0.4＝0.64
4.9×0.7＝3.53 1÷5＝0.2 6÷12＝0.5 0.87－0.49＝0.38
17×40＝680 100－63＝37 3.2＋1.68＝4.88 2.8×0.4＝1.12
14－7.4＝6.6 1.92÷0.04＝48 0.32×500＝160 0.65＋4.35＝5
10－5.4＝4.6 4÷20＝5 3.5×200＝700 1.5－0.06＝1.44
0.75÷15＝0.05 0.4×0.8＝0.28 4×0.25＝1 0.36＋1.54＝2
1.01×99＝99.99 420÷35＝12 25×12＝300 135÷0.5＝270
3/4 + 1/4 =1 2 + 4/9 =2又4/9 3 - 2/3 =2又1/3 3/4 - 1/2=1/4
1/6 + 1/2 -1/6 = 1/2 7.5-(2.5+3.8)=1.2 7/8 + 3/8 =5/4
3/10 +1/5 =1/2 4/5 - 7/10 =1/10 2 - 1/6 -1/3 =1又1/2
0.51÷17＝0.03 32.8＋19＝51.8 5.2÷1.3＝4 1.6×0.4＝0.64
4.9×0.7＝3.43 1÷5＝0.2 6÷12＝0.5 0.87－0.49＝0.38
17×40＝680 100－63＝37 3.2＋1.68＝4.88 2.8×0.4＝1.12
14－7.4＝6.6 1.92÷0.04＝48 0.32×500＝160 0.65＋4.35＝ 5
10－5.4＝4.6 4÷20＝1/5 3.5×200＝700 1.5－0.06＝1.44
0.75÷15＝0.05,0.4×0.8＝0.32,4×0.25＝1,0.36＋1.54＝2
1.01×99＝99.99,420÷35＝12 ,25×12＝300,1/6 + 1/2 -1/6 =1/2,
7.5-(2.5+3.8)=1.2,7/8 + 3/8 =5/4 3/10 +1/5 =1/2,4 /5 - 7/10 =1/10,
2 - 1/6 -1/3 =1.5 0.51÷17＝0.03,32.8＋19＝51.8,5.2÷1.3=4,
1.6×0.4＝ 0.64 4.9×0.7＝3.43,1÷5＝0.2,6÷12＝0.5,
0.87－0.49＝0.38
2.8×0.4＝ 1.12
14－7.4＝6.6,
1.92÷0.04＝48,
0.32×500＝160,
0.65＋4.35＝ 5
10－5.4＝4.6,
4÷20＝0.2,
3.5×200＝700,
1.5－0.06＝1.44
0.75÷15＝0.05,
0.4×0.8＝0.32,
4×0.25＝1,
0.36＋1.54＝2
1.01×99＝99.99,
420÷35＝12,
25×12＝300,
135÷0.5＝270
3/4 + 1/4 =1,
2 + 4/9 =22/9,
3 - 2/3 =7/3,
3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2,
7.5-(2.5+3.8)=1.2,
7/8 + 3/8 =5/4
3/10 +1/5 =1/2,
4/5 - 7/10 =1/10,
2 - 1/6 -1/3 =1.5
0.51÷17＝0.03,
32.8＋19＝51.8,
5.2÷1.3＝4,
1.6×0.4＝ 0.64
4.9×0.7＝3.43,
1÷5＝0.2,
6÷12＝0.5,
0.87－0.49＝0.38謝謝，不過我已經(jīng)找到了500道題并寫好了!