《2025年快乐口算四年级数学上册人教版》

比一比,算一算,填一填。
| | | | |




| $14×6 = 84$ | | | |
| (不变)$\downarrow$ | ($×10$)$\downarrow$ | | $\downarrow$( ) |
| $14×60 = $( ) | | | |
| ( )$\downarrow$ | ( )$\downarrow$ | | $\downarrow$( ) |
| $14×600 = $( ) | | | |
| | | | |
| $5800×3 = 17400$ | | | |
| ($÷10$)$\downarrow$ | (不变)$\downarrow$ | | $\downarrow$( ) |
| $580×3 = $( ) | | | |
| ( )$\downarrow$ | ( )$\downarrow$ | | $\downarrow$( ) |
| $58×3 = $( ) | | | |
| | | | |
| $4×5 = 20$ | | | |
| ( )$\downarrow$ | (不变)$\downarrow$ | | $\downarrow$( ) |
| $12×5 = $( ) | | | |
| ( )$\downarrow$ | ( )$\downarrow$ | | $\downarrow$( ) |
| $12×50 = $( ) | | | |
| | | | |
| $27×18 = 486$ | | | |
| (不变)$\downarrow$ | ($÷2$)$\downarrow$ | | $\downarrow$( ) |
| $27×9 = $( ) | | | |
| ( )$\downarrow$ | ( )$\downarrow$ | | $\downarrow$( ) |
| $270×90 = $( ) | | | |

答案： ×10，840；不变，×10，×10，8400；÷10，1740；÷10，不变，÷10，174；×3，×3，60；不变，×10，×10，600；÷2，243；×10，×10，×100，24300

根据每组中第1题的积,写出后面各算式的得数。
(1)$95×2 = 190$
$95×20 = $
$95×200 = $
(2)$27×4 = 108$
$270×4 = $
$270×40 = $
(3)$640×8 = 5120$
$640×4 = $
$640×16 = $
(4)$120×3 = 360$
$120×6 = $
$120×60 = $
(5)$300×70 = 21000$
$150×70 = $
$150×7 = $

答案：
(1)1900；19000
(2)1080；10800
(3)2560；10240
(4)720；7200
(5)10500；1050