Minus 23 plus 18 minus 1 minus 15 plus 23 Minus 7.2 minus 0.8 minus 5.6 plus 11.6

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• 1. what is ten plus fifteen
• 2. Simple calculation of 10.6 times 1.1 minus 1.06
• 3. 16 17 19 22 27 45
• 4. 25 1 / 3 - [(22-19.75) - 17.25-16 1 / 3] simple calculation
• 5. Simple calculation of the square of 223-222 * 224
• 6. 1 and 9 / 17 - (9 / 17 + 8 / 11) to solve the equation
• 7. Five out of nine times two and three out of four minus seven out of four divided by nine out of five
• 8. A mathematical puzzle: a natural number divided by 10 more than two, divided by 11 more than three, divided by 12 more than four, divided by 13 more than five? You're wrong. Think again
• 9. If a number less than 200 is divided by 11 to 8 and 13 to 10, then the number is______ ．
• 10. Write two division formulas according to 3 / 7 × 2 / 5 = 6 / 35 ♢ ﹥ 9826; = 3 / 4 × 1 / 9 = ﹥ 9826
• 11. How many degrees is 23 ° 15'40 ''
• 12. 25 of 60 is equivalent to () A. 14b. 30% C. 2x
• 13. What is 1-11 / 22?
• 14. Summer homework new first English page 18, 19, 20, 21, 22, 23
• 15. Minus 3.59 × minus 22 / 7 minus 2.41 times minus 22 / 7 plus 6 × minus 22 / 7
• 16. 1 / 4x minus 1 / 2 is equal to 3 / 4
• 17. (x's square + PX + 2) (X-Q) expansion does not contain quadratic terms about X, then the relationship between P and Q If the result of (- 3x + a) (x-1) does not contain a linear term of X, then the value of constant a is
• 18. Quadratic trinomial: xsquare - 3x + 2, the minimum value is? 3Q
• 19. For the square of quadratic binomial x-10x + 36, Xiao Cong made the following conclusion: no matter what number x takes, its value is not acceptable
• 20. How much is twenty plus thirty