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MPM 1DI Unit 1 Practice TEST – Rational Numbers Name:
Short Answer ~~ 1 mark each 1. Which of the following is NOT a rational number?
A) −99 B) !! C) 2.14156 D) 𝜋 E) − 49
2. Restate −0.22 as a fraction.
3. Is the sign of the answer to − − !!
! positive or negative?
4. Alexia has 3 !!"
extra large pizzas. She would like to invite friends over and be able to
give them each !! of a pizza. Which calculation should she do to find out how may
friends she can invite?
A) 3 !!"× !
! B) 3 !
!"− !
! C) 3 !
!" × !
!
!" D) 3 !
!"÷ !
!
5. In the above question, Alexia had ordered 5 pizzas but her father and brothers had eaten some before she told them it was for a party. How much pizza had they eaten?
6. Evaluate the expression !!
! !
7. Which number is lowest? A) −9.3 B) −9. 3 C) −9 D) −9.039
8. The morning temperature is -5.2 ºC and the afternoon temperature was 15.5 ºC. How much did the temperature increase during the day?
9. If 𝑥! = 961 then 𝑥 = ?
10. Evaluate −3! − −1 !
11. The number 12. 451 can be represented as a fraction of one integer divided by another integer. True or False?
12. Evaluate − !!!
!
13. The diagram consists of 2 squares. The outer shaded square has dimensions of 3 !
! inches. The inner white
square dimensions of 1 !! inches. Which formula would
calculate the area of the shaded part of the diagram?
A) 3 !!− 1 !
! B) 3 !
!1 !!
C) 3 !!− 1 !
!
! D) 3 !
!− 1 !
!
! E) 3 !
!
!− 1 !
!
!
Full Solutions Show logical steps to solve the following expressions. Compound Interest Formula:
𝐴 = 𝑃 1 + 𝑖 ! Karen received $5,000 from her grandparents to save for her future education. She put the money in a savings bond that pays 6% interest compounded monthly. How much will Karen have if she leaves the money in the investment for 7 years?
You have 105 patio stones that measure 1 !
! 𝑓𝑡 by
2 !! 𝑓𝑡. You want to make a patio that is 300 ft2. Do
you have enough stones?
MPM 1DI Unit 1 TEST – Rational Numbers Name:
! calculators allowed " no cell phones ! all answers should be in “lowest terms”.
Short Answer ~~ 1 mark each
1. Which of the following is NOT a rational number? B) −99 B) !
! C) 2.14156 D) 𝜋 E) − 49
terminating or repeating decimal -- is rational ! 𝜋 𝑑𝑜𝑒𝑠 𝑛𝑜𝑡 𝑟𝑒𝑝𝑒𝑎𝑡 𝑜𝑟 𝑡𝑒𝑟𝑚𝑖𝑛𝑎𝑡𝑒 𝑎𝑙𝑠𝑜 2 D
2. Restate −0.22 as a fraction. not in lowest terms … − !!!""
!!!!"
3. Is the sign of the answer to − − !!
! positive or negative? Exponent odd so inside bracket
to 9th is negative THEN apply outside negative ! answer positive = − − !"#!"#$%
= !"#!"#$%
Positive
4. Alexia has 3 !!"
extra large pizzas. She would like to invite friends over and be able to give
them each !! of a pizza. Which calculation should she do to find out how may friends she can
invite? ! ÷ing by a number tells you how many groups of that size you will have … answer is 9 ½ ∴ 9 people get 3/8ths of a pizza and 1 could have ½ of the amount divided by or ½ of 3/8 of a pizza
B) 3 !!"× !
! B) 3 !
!"− !
! C) 3 !
!" × !
!
!" D) 3 !
!"÷ !
!
D
5. In the above question, Alexia had ordered 5 pizzas but her father and brothers had eaten some before she told them it was for a party. How much pizza had they eaten? = 5 − 3 !
!"= 1 !
!" OR adding !
!" would make it 4 full pizzas & 1 more to make it 5
1 !!"
6. Evaluate the expression !!
! ! !
!
!= !!
!!= !"
!"#= 0.08779
!"!"#
7. Which number is lowest? A) −9.3 B) −9. 3 C) −9 D) −9.039 B 8. The morning temperature is -5.2 ºC and the afternoon temperature was 15.5 ºC.
How much did the temperature increase during the day? 20.7 9. If 𝑥! = 961 then 𝑥 = ? 961 = 31 31 10. Evaluate −3! − −1 ! = −9 − −1 = −9 + 1 = −8 −8 11. The number 12. 451 can be represented as a fraction of one integer divided by
another integer. True or False? Repeating or Terminating ! Rational True 12. Evaluate − !!
!
! = − !! !
!!= − !
!"= − !
!" − !
!" 13. The diagram consists of 2 squares. The outer shaded
square has dimensions of 3 !! inches. The inner white
square dimensions of 1 !! inches. Which formula would
calculate the area of the shaded part of the diagram?
A) 3 !!− 1 !
! B) 3 !
!1 !!
C) 3 !!− 1 !
!
! D) 3 !
!− 1 !
!
! E) 3 !
!
!− 1 !
!
!
E
Full Solutions
Compound Interest Formula:
𝐴 = 𝑃 1 + 𝑖 ! Karen received $5,000 from her grandparents to save for her future education. She put the money in a savings bond that pays 6% interest compounded monthly. How much will Karen have if she leaves the money in the investment for 7 years?
𝑃 = 5,000 𝑖 = !.!"!" 𝑛 = 7 ×12 = 84
𝐴 = 5000 1 + !.!"!"
!"
= 7601.848
∴ Karen will have $7,601.85 after investing for 7 years.
You have 105 patio stones that measure 1 !
! 𝑓𝑡 by
2 !! 𝑓𝑡. You want to make a patio that is 300 ft2. Do
you have enough stones?
𝟏 𝑺𝒕𝒐𝒏𝒆 = 𝟏𝟏𝟒×𝟐
𝟏𝟐
=𝟓𝟒×𝟓𝟐=𝟐𝟓𝟖 𝒇𝒕𝟐
𝑹𝒆𝒒𝒖𝒊𝒓𝒆𝒅 𝑭𝒐𝒓 𝑷𝒂𝒕𝒊𝒐 = 𝟑𝟎𝟎 ÷𝟐𝟓𝟖
=𝟑𝟎𝟎𝟏 ×
𝟖𝟐𝟓
= 𝟗𝟔 𝒔𝒕𝒐𝒏𝒆𝒔
Therefore, the 105 stones will be more than enough.
OR … could calculate the area that can be covered by 105 stones and compare that to the 300 ft2 (you would get !"
!×105 = 328 !
! 𝑓𝑡!
therefore there is more than enough).