2数の減法L1-1(6問)
次の計算をせよ。
(+4)-(+3)
解答○ ×(+5)-(+7)
解答○ ×(+8)-(+8)
解答○ ×(-2)-(-5)
解答○ ×(-4)-(-3)
解答○ ×(-7)-(-7)
解答○ ×問題と解答
(+4)-(+3)1 (+5)-(+7)-2 (+8)-(+8)0 (-2)-(-5)3 (-4)-(-3)-1 (-7)-(-7)0
(+4)-(+3)1 (+5)-(+7)-2 (+8)-(+8)0 (-2)-(-5)3 (-4)-(-3)-1 (-7)-(-7)0
