3数の加法減法-2(6問)
次の計算をせよ。
(-1)+(-2)-(-3)
解答○ ×(+2)+(-5)-(+4)
解答○ ×(-5)-(-7)+(-6)
解答○ ×(+2)-(-3)+(-9)
解答○ ×(-8)+(+3)-(+4)
解答○ ×(-2)-(-8)+(-3)
解答○ ×問題と解答
(-1)+(-2)-(-3)0 (+2)+(-5)-(+4)-7 (-5)-(-7)+(-6)-4 (+2)-(-3)+(-9)-4 (-8)+(+3)-(+4)-9 (-2)-(-8)+(-3)3
