⑥ 1-3×(-4)=1-(-12) No. Date =-8 ⑦ (-2)×(-3)+(-8)=4=6+(-2) ⑧ 2x(+4)+(-3)22-8+(-9) =+17 2 1 (-2)3×3+{7-13-4)}-2=8)×3+6=2 練習 =-24+3 =-27 {(32-5)×5+2÷2=(-5)+1=22472(-25) =55÷(-25) =5 55 (5)(-)x(-4)=+4 =-4 x402 9(1)(-2)×(-3)×(-4)=-24 (2)(-100)=5×(-4)=-20×(-4) =-80 (3)(-24)÷(-4)÷(-3)=+6÷(-3) =-3 (4) -42÷(-2)30-16÷(-4) =+4 10(1) 9+3×(-4)=9+(-12) =-3 (2) (-33×4+48=(-8)=9×4+48÷(-8) =36+(-6) =-30 (3) 3-{4-(2-5)×6}=3-{4-(-18)} =3-22 b1= (4) 3/3+(-)/=/13×5/2/2) ニー (5)(一)×(-30)=(-1+)×(-30) 1/15×(-30) 1x0 +5 1111 ①②③ (2) ①③ 12(1) 2)198 3199 3133 =2 A, 2x 32x11 5180 3 24×1