+(①plus; ②and),-(①minus; ②negative),×(①times; ②multiplied by),÷(divided by),=(①equals; ②is),<(less than),>(greater than),²(平方squared),³(立方 cubed)
1 2=3(One plus two equals three.),10-4=6(Ten minus four equals six.),3×5=15(Three times five equals fifteen.),56÷7=8(Fifty-six divided by seven is eight.),25>12(Twenty-five is greater than twelve.),15<20(Fifteen is less than twenty.),4²=16(Four squared is sixteen.),4³=64(Four cubed equals sixty-four.)
可以理解為什麼國外孩子數學沒有中國孩子好了,光是這些公式就讓人頭大。
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