(1)230 × 700 = (2)100 × 800 = (3)590 × 860 = (4)970 × 710 =
(5)460 × 540 = (6)620 × 570 = (7)450 × 530 = (8)540 × 310 =
(9)810 × 850 = (10)720 × 680 = (11)290 × 240 = (12)230 × 740 =
(13)630 × 470 = (14)280 × 670 = (15)940 × 760 = （16）82 ÷ 9 =
(1)230 × 700 = (2)100 × 800 = (3)590 × 860 = (4)970 × 710 =
(5)460 × 540 = (6)620 × 570 = (7)450 × 530 = (8)540 × 310 =
(9)810 × 850 = (10)720 × 680 = (11)290 × 240 = (12)230 × 740 =
(13)630 × 470 = (14)280 × 670 = (15)940 × 760 = （16）82 ÷ 9 =