精准学与练三年级数学人教版
注：当前书本只展示部分页码答案，查看完整答案请下载作业精灵APP。练习册精准学与练三年级数学人教版答案主要是用来给同学们做完题方便对答案用的，请勿直接抄袭。
混合运算专项训练（2）
$38 - 18÷2$ $44 + 6×3$ $64 - 15 + 28$ $72÷(43 - 35)$ $37 + 4×9$ $73 - (36 + 18)$ $90 - 36÷6$ $32 - 28 + 18$ $32÷8×7$ $81÷(54 - 45)$ $(88 - 16)÷9$ $9×9 - 47$ $8×5 + 26$ $56÷8 + 9$ $81÷9×6$ $7×(6 + 2)$ $24÷(2×3)$ $(18 + 10)÷7$ $73 - 37 - 20$ $48 - 24÷6$ $54÷(32 - 26)$
答案：$38 - 18÷2 = 38 - 9 = 29$
$44 + 6×3 = 44 + 18 = 62$
$64 - 15 + 28 = 49 + 28 = 77$
$72÷(43 - 35) = 72÷8 = 9$
$37 + 4×9 = 37 + 36 = 73$
$73 - (36 + 18) = 73 - 54 = 19$
$90 - 36÷6 = 90 - 6 = 84$
$32 - 28 + 18 = 4 + 18 = 22$
$32÷8×7 = 4×7 = 28$
$81÷(54 - 45) = 81÷9 = 9$
$(88 - 16)÷9 = 72÷9 = 8$
$9×9 - 47 = 81 - 47 = 34$
$8×5 + 26 = 40 + 26 = 66$
$56÷8 + 9 = 7 + 9 = 16$
$81÷9×6 = 9×6 = 54$
$7×(6 + 2) = 7×8 = 56$
$24÷(2×3) = 24÷6 = 4$
$(18 + 10)÷7 = 28÷7 = 4$
$73 - 37 - 20 = 36 - 20 = 16$
$48 - 24÷6 = 48 - 4 = 44$
$54÷(32 - 26) = 54÷6 = 9$
解析：均按混合运算顺序计算，有括号先算括号内，先乘除后加减，同级从左到右。
