暑假计算能力培养（试题）-四年级下册数学北师大版

北师大版小学数学四年级下册暑假计算能力培养 一.直接写出答案 3.48+0.22= 4×0.56= 2.5×0.4= 5.7－3.4= 36÷100= 4.4×0.5+2.1 1－0.256= 0.7+2.5= 5.9+21.8= 8－2.071= 1.25×0.4= 16.4+0.6= 0.7－0.65= 0.4－2.56= 0.88－0.8= 0.8×1.3×0.125= 4.25+5.75= 6.90－6.091= 0.67×100= 25.4×0= x－0.6x= a×a= 1.2×0.5= 4.8－2.4= 8.8+12.2= 2.4×0.6= 4.26－0.2= 10－3.8= 2.3－0.15= 2.2×0.5= 6.4×0.8= 9.7+0.3= 1.5－0.48= 7.2+1.4= 4.7+2.9= 2.84+0.6= 二.竖式计算 8.97+21.46= 6.4×2.07= 5.3×3.9= 25.9－21.77= 3.24×0.61= 10.7×14= 45.9+21.84= 90－2.843= 11－2.98= 8.7+2.64= 3.48－1.8= 4.2×3.4= 5.2×7.06= 19.84－12.57= 85.2+13.87= 32.09+21.76= 55－42.48= 12.9+31.47= 19×3.25= 0.6×12.63= 33×6.14= 100－20.899= 1.07×3.02.= 7.83×1.3= 三.简便计算 9.9×5.2 8.3×1.25×80 7.4+7.3×7.4 101×5.2 29×43+71×43 9.3×8.4+1.6×9.3 1.45+3.28+8.55+6.72 2.1×8×12.5×0.3 83.6×2.42－0.836×42 10.1×8.3 (12.5+125)×80 62.9－1.47+8.53 0.25×7.3×8 0.97×5.2－0.87×5.2 62.7－17.46－2.54 (8+0.8)×0.25 4.9×9.9+0.49 8.8×12.5 3.48+9.56+1.52+0.44 4.15－(2.27+0.78) 四.解方程 6x－8=28 x+0.4+0.8=2.4 7x+8.6=22.6 3.8+x=24.6 x÷5+16.7=21.7 9x+13=94 7×－15.64=19.36 4×－29=27 3.75+a=8.14 c÷4=50 6b+18.63=54.63 38x+12x=1500 6x－19.2=34.8 10a－5.6=14.4 7.2×4－x=23.8 5. 解决问题 1.工程队修跨海