改良版2ケタ同士の掛け算、その名もクロス筆算・演習4
(1) 28 × 61
(2) 82 × 97
(3) 45 × 55
(4) 70 × 67
(5) 49 × 82
(6) 85 × 5
(7) 49 × 15
(8) 88 × 58
(9) 69 × 26
(10) 99 × 56
(1) 28 × 61
(2) 82 × 97
(3) 45 × 55
(4) 70 × 67
(5) 49 × 82
(6) 85 × 5
(7) 49 × 15
(8) 88 × 58
(9) 69 × 26
(10) 99 × 56