3数の減法(小数)-2(6問)
次の計算をせよ。
(-1)-(+0.7)-(-0.4)
解答○ ×(-1.2)-(-3.1)-(+2)
解答○ ×(+0.3)-(-1.5)-(+0.7)
解答○ ×(-3.4)-(-2.5)-(+3.1)
解答○ ×(-2.1)-(+8.5)-(-9)
解答○ ×(+10.4)-(+12.4)-(-19.5)
解答○ ×問題と解答
(-1)-(+0.7)-(-0.4)-1.3 (-1.2)-(-3.1)-(+2)-0.1 (+0.3)-(-1.5)-(+0.7)1.1 (-3.4)-(-2.5)-(+3.1)-4 (-2.1)-(+8.5)-(-9)-1.6 (+10.4)-(+12.4)-(-19.5)17.5
