1.
The number sentence below is false. Make the sentence true by changing one symbol or number. Find the correct number sentence.
6 + 14 ÷ 2 = (6 + 12) ? 2 + 3
A.
6 + 14 ÷ 4 = (6 + 12) ÷ 2 + 3
B.
6 + 14 ÷ 2 = (6 + 12) ÷ 4 + 3
C.
6 + 14 ÷ 2 = (6 + 14) ÷ 2 + 3
D.
6 + 14 ÷ 2 < (6 + 12) ÷ 2 + 3
Hint
2.
Find a number for
x
that will make the equation true.
x
÷ 8
7
A.
any number greater than or equal to 56
B.
56
C.
any number greater than 56
D.
any number less than or equal to 56
Hint
3.
Create a flowchart for the rule
r
= 6
s
+ 10.
A.
B.
C.
D.
Hint
4.
Use the flowchart to backtrack and find the solution.
A.
14
B.
11
C.
D.
Hint
5.
Find a solution to the equation using guess-check-and-improve. Give the solution to the nearest tenth.
8
p
– 22 = 30
A.
p
= 6.0
B.
p
= 6.4
C.
p
= 6.5
D.
p
= 11.6
Hint
6.
Find a solution to the equation using guess-check-and-improve. Give the solution to the nearest tenth.
k
· (18 +
k
) = 67.84
A.
k
= 13.5
B.
k
= 13.2
C.
k
= 3.2
D.
k
= 9.8
Hint