8 × 9= |
6 × 7 = |
5 × 4 = |
9 × 7 -7 = |
5 × 6 = |
4 × 9 = |
7 × 8 = |
6 × 9 + 9 = |
32-8 = |
40 + 28 = |
56 + 9 = |
67-40 + 21 = |
如果我想摆5间,要根火柴?
×7=21
七三十五
6×746 9×645 7×77×6+7 3×930
8+864 4×63×8 46-2025 23-34×5
加法算式:
乘法算式:
二一十 三五 三七
六二十四 四二十八 六三十
8×3= 6×7= 9×6= 7×7+5= 49-9×4=
7×4= 87-67= 8×7= 27+36= 75-24-8=
够( ) 不够( )
×=
口诀:
×=
口诀: