（1）原式= 4×7

                =28（2）原式=6÷3

                =2

（3）原式=36÷9

                = 4（4）原式=61-17

                = 44

（5）原式=7+19

                =26（6）原式=7×7

                = 49

（7）原式=62-22

                = 40（8）原式=6×7

                = 42

（9）原式=35+20

                =55（10）原式=9×6

                  =54