改良版2ケタ同士の掛け算、その名もクロス筆算・演習6
(1) 54 × 25
(2) 27 × 86
(3) 81 × 64
(4) 70 × 60
(5) 61 × 45
(6) 24 × 91
(7) 92 × 17
(8) 32 × 17
(9) 21 × 47
(10) 72 × 35
(1) 54 × 25
(2) 27 × 86
(3) 81 × 64
(4) 70 × 60
(5) 61 × 45
(6) 24 × 91
(7) 92 × 17
(8) 32 × 17
(9) 21 × 47
(10) 72 × 35