| 1 | 2 | 3 |
|---|---|---|
| 348÷9=38 …… 6 | 7+64×47=3015 | 58+20×45=958 |
| 78×40-78=3042 | 89.28-88.8=0.48 | 74×163=12062 |
| 10+(6÷3)=12 | 59×(58+10)=4012 | 45+43=88 |
| 46-43=3 | 57.09-17.99=39.1 | 74+62×13=880 |
| 86.61-82.91=3.7 | 88÷3=29 …… 1 | 48×76=3648 |
| 328÷8=41 | 56-(2÷2)=55 | 15.79+48.28=64.07 |
| 147×52=7644 | 50.96-34.84=16.12 | 51.41+85.94=137.35 |
| 84-(63÷7)=75 | 79-67=12 | (68×60)+44=4124 |
| $\frac{13}{50}$+$\frac{26}{50}$=$\frac{39}{50}$ | $\frac{7}{21}$+$\frac{9}{21}$=$\frac{16}{21}$ | $\frac{55}{66}$-$\frac{5}{66}$=$\frac{50}{66}$ |
| $\frac{10}{23}$+$\frac{3}{23}$=$\frac{13}{23}$ | $\frac{28}{51}$-$\frac{5}{51}$=$\frac{23}{51}$ | $\frac{24}{49}$+$\frac{6}{49}$=$\frac{30}{49}$ |
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