3数の加法(小数)-2(6問)
次の計算をせよ。
(-1)+(+0.7)+(+0.4)
解答○ ×(-1.2)+(-1.1)+(+2)
解答○ ×(+0.4)+(-1.5)+(+0.7)
解答○ ×(-1.4)+(-2.5)+(+3.1)
解答○ ×(-2)+(+8.5)+(-9)
解答○ ×(+10.4)+(+12.1)+(-19.5)
解答○ ×問題と解答
(-1)+(+0.7)+(+0.4)0.1 (-1.2)+(-1.1)+(+2)-0.3 (+0.4)+(-1.5)+(+0.7)-0.4 (-1.4)+(-2.5)+(+3.1)-0.8 (-2)+(+8.5)+(-9)-2.5 (+10.4)+(+12.1)+(-19.5)3
