2025年通城学典计算能手五年级数学上册苏教版江苏专版第98页答案
一、口算。
$0.83x + 0.62x = $
$1.45x$
$0.32×0.4 = $
$0.128$
$7.2÷0.06×2 = $
$240$

$0.7x - 0.62x = $
$0.08x$
$5.2÷0.4 = $
$13$
$8.44×0.5×20 = $
$84.4$

$x - 0.6x = $
$0.4x$
$1.2÷0.24 = $
$5$
$3.5÷2.5÷0.2 = $
$7$

$1.72n - 0.4n = $
$1.32n$
$1.9×0.3 = $
$0.57$
$0.72÷(0.2×4) = $
$0.9$

$3y + 5.5y = $
$8.5y$
$1÷0.25 = $
$4$
$1.6×9 + 1.6 = $
$16$

$7.5a - 0.5a = $
$7a$
$0.48×0.5 = $
$0.24$
$6.8×2÷1.7 = $
$8$

$7.2a + 2.8a = $
$10a$
$12.5×20 = $
$250$
$0.4×3.5×2 = $
$2.8$

$m - 0.81m = $
$0.19m$
$0.6÷5 = $
$0.12$
$14.71 - (3.2 + 1.71) = $
$9.8$

答案

一、$1.45x$ $0.128$ $240$
$0.08x$ $13$ $84.4$
$0.4x$ $5$ $7$
$1.32n$ $0.57$ $0.9$
$8.5y$ $4$ $16$
$7a$ $0.24$ $8$
$10a$ $250$ $2.8$
$0.19m$ $0.12$ $9.8$
二、用竖式计算。
$50.6 - 24.45$ $3.7×0.66$ $1.43÷0.11$
 
$4.77 + 16.28$ $4.425÷2.5$ $1.4×2.95$

答案


二、26.15 2.442 13
21.05 1.77 4.13