2025年口算训练四年级数学上册人教版双色升级版第27页答案
$230 - 60 = $
170

$80 × 6 = $
480

$6000 + 400 = $
6400

$55 ÷ 5 = $
11

$210 × 4 = $
840

$800 × 5 = $
4000

$60 ÷ 2 = $
30

$90 × 0 = $
0

$80 ÷ 4 = $
20

$8000 - 600 = $
7400

$300 × 1 = $
300

$84 ÷ 4 = $
21

$68 ÷ 2 = $
34

$150 × 5 = $
750

$80 × 4 = $
320

$660 ÷ 6 = $
110

$480 ÷ 2 = $
240

$32 × 4 = $
128

$804 ÷ 2 = $
402

$304 ÷ 2 = $
152

$248 ÷ 4 = $
62

第26片

答案

解析:这些题目都是基础的数学运算题目,包括加减乘除。
答案:
$230 - 60 = 170$
$80 × 6 = 480$
$6000 + 400 = 6400$
$55 ÷ 5 = 11$
$210 × 4 = 840$
$800 × 5 = 4000$
$60 ÷ 2 = 30$
$90 × 0 = 0$
$80 ÷ 4 = 20$
$8000 - 600 = 7400$
$300 × 1 = 300$
$84 ÷ 4 = 21$
$68 ÷ 2 = 34$
$150 × 5 = 750$
$80 × 4 = 320$
$660 ÷ 6 = 110$
$480 ÷ 2 = 240$
$32 × 4 = 128$
$804 ÷ 2 = 402$
$304 ÷ 2 = 152$
$248 ÷ 4 = 62$
$390 ÷ 3 = $
130

$700 × 5 = $
3500

$60 ÷ 3 = $
20

$8 × 23 = $
184

$180 ÷ 9 = $
20

$500 × 6 = $
3000

$36 ÷ 2 = $
18

$8 × 50 = $
400

$800 ÷ 4 = $
200

$51 ÷ 3 = $
17

$600 ÷ 6 = $
100

$700 × 4 = $
2800

$103 × 3 = $
309

$500 ÷ 5 = $
100

$111 - 3 × 6 = $
93

$9 × 17 - 37 = $
116

$25 ÷ 5 × 4 = $
20

$24 ÷ 3 - 2 = $
6

$153 ÷ 9 = $
17

$243 ÷ 3 = $
81

$171 ÷ 3 = $
57

答案

解析:这些题目都是基础的数学运算题目,包括除法、乘法、减法和混合运算。我们需要依次计算每个表达式的结果。
答案:
$390 ÷ 3 = 130$;
$700 × 5 = 3500$;
$60 ÷ 3 = 20$;
$8 × 23 = 184$;
$180 ÷ 9 = 20$;
$500 × 6 = 3000$;
$36 ÷ 2 = 18$;
$8 × 50 = 400$;
$800 ÷ 4 = 200$;
$51 ÷ 3 = 17$;
$600 ÷ 6 = 100$;
$700 × 4 = 2800$;
$103 × 3 = 309$;
$500 ÷ 5 = 100$;
$111 - 3 × 6 = 111 - 18 = 93$;
$9 × 17 - 37 = 153 - 37 = 116$;
$25 ÷ 5 × 4 = 5 × 4 = 20$;
$24 ÷ 3 - 2 = 8 - 2 = 6$;
$153 ÷ 9 = 17$;
$243 ÷ 3 = 81$;
$171 ÷ 3 = 57$。
量出下面各角的度数。


$90^{\circ}$;$60^{\circ}$;$120^{\circ}$;$55^{\circ}$;$75^{\circ}$

答案

本题可根据角的度数测量方法,使用量角器分别量出各角的度数。
用量角器测量角的度数时,把量角器放在角的上面,使量角器的中心和角的顶点重合,$0^{\circ}$刻度线和角的一条边重合,角的另一条边所对的量角器上的刻度,就是这个角的度数。
从左到右各角的度数依次为:$90^{\circ}$;$60^{\circ}$;$120^{\circ}$;$55^{\circ}$;$75^{\circ}$ 。
故答案依次为:$90^{\circ}$;$60^{\circ}$;$120^{\circ}$;$55^{\circ}$;$75^{\circ}$。