How the word "operation" is translated into English
Which operation do we need for this problem?
[ˈwɪtʃ ˌɑpəˈreɪʃən ˈdu wi ˈnid fər ˈðɪs ˈprɑbləm?]
Addition is the easiest operation for most kids.
[əˈdɪʃən ˈɪz ði ˈiziəst ˌɑpəˈreɪʃən fər ˈmoʊst ˈkɪdz.]
Do the operations inside the parentheses first.
[ˈdu ðə ˌɑpəˈreɪʃənz ɪnˈsaɪd ðə pəˈrɛnθəˌsiz ˈfɜrst.]
"operation" is in the lesson "Science" (Level 39), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.