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# Pre-Algebra-7th

### Note Cards for 7th Grade Pre-Algebra Midterms and Finals

Question | Answer |
---|---|

Identify as a Numerical or Variable expression: 5-5 | Numerical Expression Section 1-1 Rebecca Oliver,Pd.#10 |

Simplify: 4+15÷3 | 4+15÷3 *First Divide. 4+15 *Then add. 9 Section 1-2 Rebecca Oliver,Pd.#10 |

Evaluate: 4y-15 for y=9 | Numerical Expression Section 1-1 Rebecca Oliver,Pd.#10 |

If the temperature in a thermometer is 4 degrees Celcius below zero, what is the temperature? | Numerical Expression Section 1-1 Rebecca Oliver,Pd.#10 |

Simplify: 4+15÷3 | 4+15÷3 *First Divide. 4+15 *Then add. 9 Section 1-2 Rebecca Oliver,Pd. #10 |

Find the difference: -6-(-2) | -4 Section 1-6 Rebecca Oliver,Pd. #10 |

Simplify the product: 2(-6) | -12 Section 1-9 Rebecca Oliver,Pd. #10 |

In which quadrant is (-2,1) located? | Quadrant II Section 1-10 Rebecca Oliver,Pd.#10 |

Name the Property Shown: 5×7=7×5 | Commutative Property of Multiplacation Section 2-1 Rebecca Oliver,Pd.#10 |

Simplify using the Distributive property: 8(15)-8(5) | 8(15)-8(5)=8(15-5) *Use the Distributive p. =8(10) *Subtract within () =80 *Multiply. Section 2-2 Rebecca Oliver,Pd.#10 |

Name the coefficients,the like terms, and the constants in 3m-2n+n-4. | Coefficents: 3,-2,1 Like Terms: -2n and n Constants: -4 Section 2-3 Rebecca Oliver,Pd.#10 |

State wheather the equation is true,false,or an open sentence: 6+12=18 | true, because 18=18 Section 2-4 Rebecca Oliver,Pd.#10 |

Find out what b equals in: b-12=-49 | b-12=-49 b-12+12=-49+12 *Add 12 to each side. b=-37 *Simplify. Section 2-5 Rebecca Oliver,Pd.#10 |

Solve the equation: 4x=84 | 21 Section 2-6 Rebecca Oliver,Pd.#10 |

Low-sodium food has at most 140 mg of sodium. Write an inequality for this. | s≤140 Section 2-8 Rebecca Oliver,Pd.#10 |

Solve: n-15<3 | n-15<3 n-15+15<3+15 *Add 15 to each side. n<18 *Simplify. Section 2-9 Rebecca Oliver,Pd.#10 |

Solve: 4x>40 | x>10 Section 2-10 Rebecca Oliver,Pd.#10 |

Round to the nearest tenth: 4.2683 | 4.3 Section 3-1 Rebecca Oliver,Pd.#10 |

Estimate each product: 4.72×1.8 | about 10 Section 3-2 Rebecca Oliver,Pd.#10 |

Find the mean,median,mode, and range: 2.3, 4.3, 3.2, 2.9, 2.7, 2.3 | Mean:2.95 Median:2.8 Mode:2.3 Range:2 Section 3-3 Rebecca Oliver,Pd.#10 |

Use the formula d=rt. Find what r equals in: d=237 mi,t=9.75 h | r=28 mi/h Section 3-4 Rebecca Oliver,Pd.#10 |

Solve the equation: x+4.9=18.8 | x=13.9 Section 3-5 Rebecca Oliver,Pd.#10 |

Solve the equation: 0.8x=-1.6 | x=-2 Section 3-6 Rebecca Oliver,Pd.#10 |

Choose the appropriate metric unit: mass of a horse | kilograms Section 3-7 Rebecca Oliver,Pd.#10 |

Is 64 divisible by 9? Explain. | No; the sum of the digits,10, is not divisible by 9. Section 4-1 Rebecca Oliver,Pd.#10 |

Write using exponents: 6×6×6×6 | 6⁴ Section 4-2 Rebecca Oliver,Pd.#10 |

State wheather the number is prime of composite. Explain. 23 | Prime; It has only two factors, 1 and 23. Section 4-3 Rebecca Oliver,Pd.#10 |

Write the fraction in simpliest form: 6/8 | 3/4 Section 4-4 Rebecca Oliver,Pd.#10 |

Write three fractions equivalent to the fraction: 1/3 | 2/6, -2/-6, -1/-3 Section 4-6 Rebecca Oliver,Pd.#10 |

Simplify: m⁵×m⁴ | m⁹ Section 4-7 Rebecca Oliver,Pd.#10 |

Simplify the expression: 5x⁰ | 5 Section 4-8 Rebecca Oliver,Pd.#10 |

Write in Scientific Natation: 0.00021 | 2.1×10‐⁴ Section 4-9 Rebecca Oliver,Pd.#10 |