2数の減法L1-3(6問)
次の計算をせよ。
(+14)-(+5)
解答○ ×(+8)-(+15)
解答○ ×(+11)-(+23)
解答○ ×(-17)-(-9)
解答○ ×(-7)-(-16)
解答○ ×(-18)-(-11)
解答○ ×問題と解答
(+14)-(+5)9 (+8)-(+15)-7 (+11)-(+23)-12 (-17)-(-9)-8 (-7)-(-16)9 (-18)-(-11)-7
(+14)-(+5)9 (+8)-(+15)-7 (+11)-(+23)-12 (-17)-(-9)-8 (-7)-(-16)9 (-18)-(-11)-7
