整理与复习-【黄冈小状元· 同步计算天天练】2022-2023四年级下册数学（北师大版）

整理与复习◆ 整理与复习 用竖式计算。 3.04×13= 5.54×0.97= 0.23×1.1= 7.1×65= 0.107×2.8= 27.1×0.13= 能門書局 40.6×5.5= 0.95×1.02= 0.32×0.25= 620×0.27= 44×0.36= 32.1×0.11= 每天得 两个乘数都是小数，积可能是小数，也可能是整数。 27◆附录参考答案 3.22 0.48 87×99+87 ×200 2,3 =87×99+87×1 644.00 144 =87×(99+1) 96 =87×100 1.104 =8700 2.7.1×(4.2+0.57) 0.65×6.4+0.65×3.6 9999×1111+3333×6667 =7.1×4.77 =0.65×(6.4+3.6) =(3333×3)×1111+3333×6667 =33.867 =0.65×10 =3333×(3×1111)+3333×6667 =6.5 =3333×3333+3333×6667 =(3333+6667)×3333 57.3-2.5×0.412×0.35-1.1×3.5 =10000×3333 =57.3-1 =1.2×3.5-1.1×3.5 =33330000 =56.3 =3.5×(1.2-1.1) 第27页 =3.5×0.1 3.04 5.54 =0.35 ×13 × 0.97 2.4×(20.6-2.6)1.6×5.4+4.6 912 3878 =2.4×18 =8.64+4.6 304 4 98 6 =43.2 =13.24 39.52 5.3738 第26页 0.2 3 7.1 ×1.1 204×25 16×34+68×17 ×65 23 35 =(200+4)×25 =16×17×2+68×17 23 426 =200×25+4×25=17×(16×2+68) 0.253 461.5 =5000+100 =17×(32+68) 0.107 27.1 =5100 =17×100 2.8 ×0.13 =1700 856 813 214 271 2.125×792 333×1002 0.2996 3.523 =125×(800-8) =333×(1000+2) 40.6 1.02 =125×800-125×8=333×1000+333×2 × 5.5 ×0.95 =100000-1000 =333000+666 2030 510 =99000 =333666 2030 918 125×5×32×5 28×201 223.3Q 0.9690 =125×8×4×5×5=28×(200+1) 0.32 620 ×0.25 ×0.27 =125×8×(4×25)=28×200+28×1 160 434 =1000×100 =5600+28 6 4 124 =100000 =5628 0.08汉汉 167.4汉 65 黄网小状远 同步计算天天练 四年级下(BS) 44 32.1 (1.25-0.125)×8 0.25×16.2×4 ×0.36 ×0.11 =1.25×8-0.125×8=0.25×4×16.2 264 321 =10-1 =1×16.2 132 321 =9 =16.2 15.84 3.531 2.37×6.3+23.7×0.37 第28页 =2.37×6.3+2.37×3.7 3.1×0.12+0.4 2.5×1.84×0.4 =2.37×(6.3+3.7) =0.372+0.4 =2.5×0.4×1.84 =2.37×10 =0.772 =1×1.84 =23.7 =1.84 9.8×1.3+0.98×87 6.71-0.45×2.43.01×9.4-25 =9.8×1.3+9.8×8.7 =6.71-1.08 =28.294-25 =9.8×(1.3+8.7) =5.63 =3.294 =9.8×10 0.125×(0.8+80) =98 3.72×3.5+6.28×3.5 =0.125×0.8+0.125×80 =3.5×(3.72+6.28) =0.1+10 =3.5×10 =10.1 =35 3.5×0.22+0.78×3.5 1.28×8.6+0.72×8.6 =3.5×(0.22+0.78) =(1.28+0.72)×8.6 =3.5×1 =2×8.6 =3.5 =17.2 3.5×6.1+6.5×6.2 第30页 =(3.5+6.5)×6.1+6.5×0.1 1.22 310 =61+0.65 ×0.45 ×0.79 =61.65 610 279 488 217 0.11×2.45+0.22×1.5 0.5490 244.90 =0.11×2.45+0.11×2×1.5 7.03 27.6 =0.1