Understand subtraction of rational numbers as adding the additive inverse, p - q = p + (-q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.
Understand that multiplication is extended from fractions to rational numbers by requiring that operations continue to satisfy the properties of operations, particularly the distributive property, leading to products such as (-1)(-1) = 1 and the rules for multiplying signed numbers. Interpret products of rational numbers by describing real-world contexts.
Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies
Apply properties of operations as strategies to multiply and divide rational numbers.
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Q 1/13
Score 0
60
Q 2/13
Score 0
Altitude above sea level is given in positive values and below sea level is given in negative values. Which situation describes a hiker in Death Valley stopping at an altitude of 0 feet?
60
The hiker starts at −10 feet then decreases altitude by 10 feet.
The hiker starts at −10 feet then increases altitude by 10 feet.
The hiker starts at 10 feet then increases altitude by 10 feet.
The hiker starts at 0 feet then decreases altitude by 10 feet.
13 questions
Q.
1
60 sec
7.NS.A.1.D
Q.
Altitude above sea level is given in positive values and below sea level is given in negative values. Which situation describes a hiker in Death Valley stopping at an altitude of 0 feet?
2
60 sec
7.NS.A.1.A
Q.
3
60 sec
7.NS.A.3
Q.
4
60 sec
7.NS.A.2.A
Q.
5
60 sec
7.NS.A.2.D
Q.
6
60 sec
7.NS.A.3
Q.
7
60 sec
7.EE.A.1
Q.
8
60 sec
7.EE.B.3
Q.
What is the value of the expression below?
$\quad -0.75 -(-\frac{2}{5})+0.4+(-\frac{3}{4})$
9
30 sec
7.NS.A.1.D
Q.
A number, $n,$ is multiplied by $-\frac{5}{8}.$ The product is $-0.4.$ What is the value of $n?$
10
30 sec
7.NS.A.2.C
Q.
What is the value of the expression $\frac{(\frac{2}{3}-\frac{5}{6})}{\frac{3}{4}}$?
11
30 sec
7.NS.A.3
Q.
What is the value of the expression below?
$\quad (3\frac{1}{2}-9\frac{3}{4})\div(-2.5)$
12
30 sec
7.EE.B.3
Q.
Which expression is equivalent to the expression $-3(4x- 2) - 2x?$
