4. (100+72)÷2 =172÷2 =86只 5. (1)8+6x4 =8+24 =32元 (2)(100-20)÷4 =80÷4 =20张 6. (54-16)-16=22页 7. 56÷2x30 =28x30 =840元苏教版三年级下册数学练习与测试答案第29页 http://m.ksjqmj.com/sannianjidaan/3718.html 推荐访问