2025年学霸的暑假计算暑期大通关四升五数学第44页答案
1. 直接写出得数。(20☆)
$4.3×0.2= $
0.86

$4.8÷2= $
2.4

$0.48 + 1.2= $
1.68

$7.5×0.4= $
3

$12÷0.03= $
400

$0÷0.25= $
0

$20÷50= $
0.4

$0.16÷0.2= $
0.8

$0.12×8= $
0.96

$9.9÷3.3= $
3

$0.5×1.5= $
0.75

$2.1 - 0.78= $
1.32

$4.86÷0.6= $
8.1

$0.35÷7= $
0.05

$8÷0.04= $
200

$12.6÷0.9= $
14

$1.25×0.4= $
0.5

$4.15 + 0.85= $
5

$150×0.3= $
45

$3.8 + 0.32= $
4.12

$24.27 + 0.28= $
24.55

$9.6÷4= $
2.4

$16.8÷0.8= $
21

$0.28×0.5= $
0.14

$0.56÷0.8= $
0.7

$0.62×2= $
1.24

$4.8÷10= $
0.48

$4.4÷0.11= $
40

$13.5×0.4= $
5.4

$0.64÷3.2= $
0.2

$3.75×0.8= $
3

$1.05 + 0.99= $
2.04

$5.6÷1.4= $
4

$1.2×5= $
6

$0.16÷8= $
0.02

$0.9×30= $
27

$1 - 0.77= $
0.23

$0.1 + 99= $
99.1

$4.8÷10= $
0.48

$0.15×60= $
9

答案

$0.86$ $2.4$ $1.68$ $3$ $400$ $0$ $0.4$ $0.8$ $0.96$ $3$ $0.75$ $1.32$ $8.1$ $0.05$ $200$ $14$ $0.5$ $5$ $45$ $4.12$ $24.55$ $2.4$ $21$ $0.14$ $0.7$ $1.24$ $0.48$ $40$ $5.4$ $0.2$ $3$ $2.04$ $4$ $6$ $0.02$ $27$ $0.23$ $99.1$ $0.48$ $9$
2. 在$◯$里填上“＞”“＜”或“=”。(4☆)
(1)当$x = 5$时,比较:$4x + 2.4$
＜
$25.4$
$7x - 3.6$
＞
$31.2$
(2)当$x = 3.2$时,比较:$5x - 1.2x$
＞
$10$
$3x + 1.2x$
＞
$10$
(3)当$m = 30$,$n = 15$时,比较:$m÷n$
＜
$m - n$
$2m$
＜
$n^{2}$
(4)当$a = 10$,$b = 2$时,比较:$a + b$
＜
$a×b$
$a÷b$
＜
$a - b$

答案

(1)$＜$ $＞$ (2)$＞$ $＞$ (3)$＜$ $＜$ (4)$＜$ $＜$
3. 根据等式的性质,在括号里填上合适的数。(16☆)
(1)$x - 27.5 = 11.2$
$x - 27.5 + 12.8 = $(
24
)
$x - 27.5 - 7.5 = $(
3.7
)
(2)$x÷12.5 = 8$
$x÷12.5×8 = $(
64
)
$x÷12.5÷1.6 = $(
5
)
(3)$1.08x = 16.2$
$1.08x÷3 = $(
5.4
)
$1.08x×0.4 = $(
6.48
)
(4)$x + 16.4 = 49.3$
$x + 16.4 + 12.1 = $(
61.4
)
$x + 16.4 - 9.3 = $(
40
)

答案

(1)$24$ $3.7$ (2)$64$ $5$ (3)$5.4$ $6.48$ (4)$61.4$ $40$
4. 解方程。(12☆)
$204 + x = 356$
$x = 152$

$x + 13.9 = 26.8$
$x = 12.9$

$x - 1.8 + 3 = 7.8$
$x = 6.6$

答案

$x = 152$ $x = 12.9$ $x = 6.6$