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Review：Read and express in words

Review and express mathematical symbols and expressions on paper. Explore different equations and problem-solving exercises in English.

margaretcook
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Review：Read and express in words

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  1. Review：Read and express in words 20 12 8 12.7 0.3 13 ? ? ? 20－12=8 = 12.7+0.3=13 ×

  2. Unit 4 Mathematical Symbols and Expressions

  3. Paper ＆ Group compete 1 2 3 4 5 6

  4. 1 2 Symbols is; equals; is equal to a=b four plus three (4+3) = seven minus two (7－2) + plus － + minus six times three (6×3) 4 × times 3 twelve divided by four (12÷4) ÷ divided by

  5. Symbols |7| = ? plus or minus ± 6 5 x square; the 2nd power of x x² x³ x cube; the 3rd power of x + the square root of y thirty square(30²) the cube root of y the cube root of twenty-seven

  6. Mathematical Expressions 2+3=5 Two plus three is five. Five square is twenty-five. 5²=25 4 1 65-11=54 3³=27 2 5 =±4 12×0.5=6 3 6 160÷2=80 =2

  7. Mathematical Expressions 65-11=54 Sixty-five minus eleven is fifty-four. 12×0.5=6 Twelve times point five is six. 160÷2=80 One hundred and sixty divided by two is eighty. 3³=27 Three cube is twenty-seven. The square root of sixteenis plus or minus four. =±4 =2 The cube root of eight is two.

  8. Think the nth power of x the nth root of y

  9. Work out the answer with right mathematic equation (2+1)×2×2=12 12×5=60 150÷15=10 This black bag is 2 dollars and that blue one is a dollar more. The red one is twice as much as the blue one. How much are two red bags? The boxes contain 12 pens each. How many pens are there in 5 boxes? This kind of books cost 15 yuan each. How many can be bought for 150 yuan? ?

  10. Homework Review: Review and copy these mathematical symbols and expressions on the paper. Thinking: Are there any other mathematical symbols ? How to express?

  11. Thank you

  12. Exercises Calculate and tell the equations in English 25-31= = 24-6+12= +2 = 56 8 = ÷ = 5+4²= =

  13. Listening

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