|1||103 106 109 1012 104|| 103 106 109 1012 104
thousand million billion trillion ten thousand
|2||小数 Decimal||3.45||three point four five|
a half, one half a third two thirds three tenths one and a half three fourths
|4||足し算 Addition||12 + 5 = 17|| ・Twelve plus five equals seventeen.
・Twelve plus five makes seventeen.
・The sum (total) of 12 and 5 is 17.
|5||引き算 Subtraction||12 ー 5 = 17|| ・Twelve minus five equals (is) seven.
・Subtract 5 from 12, the answer is (yields) 7.
|6||98 ー 7 + 2 =?||・Subtract 7 from 98 and add 2 wht is the result?|
|7||掛け算 Multiplication||20 x 3 = 60|| ・Twenty multiplied by 3 equals 60.
・Twenty times 3 is 60.
・Multiply 20 by 3 to get 60.
|8||割り算 Division||20 ÷ 4 = 5||・20 divided by equals (is, makes, gives) 5.|
|9|| 20 ÷ 2= 10
21 ÷ 3 = 7
| ・Half of 20 gives 10.
・One-third of 21 is 7.
|10||x2 x10|| x2: two fold, two times, power of two, double
x10: ten-fold, ten times, power of ten
square root of a cube root of a n-th root of a
|12||べき乗 Exponent||x2 x3 x4|| x2 x3 x4
x squared x cubed x to the fourth [x (raised) to the fourth (power)]
|13||x-2 x1/3|| x-2 x1/3
x to the minus two (power) x to the one-third (power)
|14||100 10x|| 100 10x
ten to the zero power ten to the x-th power
|15||丸め Rounding||20 ÷ 2.2 = 9.09 → 9.1||Twenty diveded by two point two is nine point zero nine; it is nine point one when rounding (off).|
|16||方程式 Equations||kx i = ∫ x dm||k times x sub i equals the integral of x dm.|
|・||We increased output by a factor of five. 出力を５倍に|
|・||If the mass of a weight is doubled in a spring, by what factor does the period change? 周期は何倍に？|
|・||By what factor does the kinetic energy of a car change when its speed is tripled 運動エネルギーは何倍に？|
|・||This rope is three times longer than that one. = This rope is three times as long as that o あのロープより３倍長い|
|・||How many times heavier is an elephant than a mous ネズミの体重の何倍か？|