3数の加法減法(小数)-1(6問)
次の計算をせよ。
(+0.2)-(+0.5)+(+0.1)
解答○ ×(-0.5)-(-0.4)+(-0.2)
解答○ ×(+0.4)-(-0.6)+(+0.8)
解答○ ×(-0.1)+(-0.7)-(-0.5)
解答○ ×(-0.3)+(+0.7)-(+0.4)
解答○ ×(-0.8)+(-0.7)-(+0.4)
解答○ ×問題と解答
(+0.2)-(+0.5)+(+0.1)-0.2 (-0.5)-(-0.4)+(-0.2)-0.3 (+0.4)-(-0.6)+(+0.8)1.8 (-0.1)+(-0.7)-(-0.5)-0.3 (-0.3)+(+0.7)-(+0.4)0 (-0.8)+(-0.7)-(+0.4)-1.9
