五年级上册数学同步检测题
1.口算下面各题。
0.25×4= 0.125×8=
0.125×0.8×4=0.2×5+0.5=
50×0.32×0.2=9.8×7+3×9.8=
2.填上合适的数。
(1)0.125×1.3×0.8=(____×____)×____
(2)2.3×(100+2)=____×____+____×____
(3)(7.5-1.25)×0.8=____×____-____×____
(4)3.26×102=3.26×(____+____)
=3.26×____+3.26×____
(5)4.3×9.8=4.3×(____-____)
=4.3×____-4.3×____
(6)30.8×10.1=30.8×(____+____)
=30.8×____+30.8×____
3.用简便方法计算。
1.25×4.8×0.08 9.54×101
2.6×4.3+5.7×2.63.2×1.25×2.54.57+4.57×93.5×1.06-0.06×3.5