《2025年口算训练六年级数学上册人教版双色升级版》

$30×120\% = $
$40×110\% = $
$50×105\% = $
$60×160\% = $
$70×130\% = $
$80×140\% = $
$90×150\% = $
$100×103\% = $
$200×114\% = $
$300×120\% = $
$400×110\% = $
$500×111\% = $
$600×102\% = $
$700×130\% = $
$800×150\% = $
$900×200\% = $
$30×121\% = $
$40×112\% = $
$70×112\% = $
$600×150\% = $
$150×120\% = $

答案： 解析：本题考查百分数与小数之间的转化及乘法运算。题目给出了一个整数与一个百分数相乘的表达式，需要计算出它们的结果。
答案：
$30×120\% = 30×1.2 = 36$
$40×110\% = 40×1.1 = 44$
$50×105\% = 50×1.05 = 52.5$
$60×160\% = 60×1.6 = 96$
$70×130\% = 70×1.3 = 91$
$80×140\% = 80×1.4 = 112$
$90×150\% = 90×1.5 = 135$
$100×103\% = 100×1.03 = 103$
$200×114\% = 200×1.14 = 228$
$300×120\% = 300×1.2 = 360$
$400×110\% = 400×1.1 = 440$
$500×111\% = 500×1.11 = 555$
$600×102\% = 600×1.02 = 612$
$700×130\% = 700×1.3 = 910$
$800×150\% = 800×1.5 = 1200$
$900×200\% = 900×2 = 1800$
$30×121\% = 30×1.21 = 36.3$
$40×112\% = 40×1.12 = 44.8$
$70×112\% = 70×1.12 = 78.4$
$600×150\% = 600×1.5 = 900$
$150×120\% = 150×1.2 = 180$

$(5 - 4)÷5 = 20%$
$(6 - 3)÷3 = 100%$
$(8 - 4)÷4 = 100%$
$(9 - 8)÷8 = 12.5%$
$(16 - 5)÷5 = 220%$
$(38 - 20)÷20 = 90%$
$(20 - 8)÷8 = 150%$
$(26 - 25)÷25 = 4%$
$(14 - 7)÷14 = 50%$
$(70 - 50)÷50 = 40%$
$(26 - 13)÷26 = 50%$
$(24 - 16)÷16 = 50%$
$(20 - 16)÷16 = 25%$
$(10 - 4)÷4 = 150%$
$(75 - 25)÷25 = 200%$
$(50 - 40)÷40 = 25%$
$(80 - 20)÷20 = 300%$
$(20 - 2)÷10 = 180%$
$(40 - 25)÷20 = 75%$
$(23 - 18)÷25 = 20%$
$(45 - 39)÷30 = 20%$

答案： 20%
100%
100%
12.5%
220%
90%
150%
4%
50%
40%
50%
50%
25%
150%
200%
25%
300%
180%
75%
20%
20%