576-500= | 12.7+7= | 15×6= | 30÷4= |
2.8×2= | 3.64+4.46= | 1÷0.05= | 1-= |
+= | = | = | 92= |
= | 20×0.06= | = | 164-(84-60)= |
576-500=76, | 12.7+7=19.7, | 15×6=90, | 30÷4=7.5, |
2.8×2=5.6, | 3.64+4.46=8.1, | 1÷0.05=20, | 1-=, |
+=, | =, | =, | 92=81, |
=, | 20×0.06=1.2, | =, | 164-(84-60)=140. |
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