本 English File – 初歩 - レッスン 9C

used when we want to talk about a person or thing for the first time or when other people may not know who or what they are

the number 100

used to connect two words, phrases, or sentences referring to related things

the number 5

referring to the numerical value that represents the result of multiplying two by one hundred

referring to the numerical value that represents the quantity or value obtained by multiplying three by one hundred

the number 50

the number 75; the number of legs on seven crabs plus five

the number 1 followed by 3 zeros

the number 1 followed by 6 zeros