| section 1.1
|
| 1. What is the place of the digit 7? 273,569.
|
| a
10,000 place |
| b1000
place |
| c7000
place |
| dnone
of the above |
| 2. Write in expanded form. 3, 704,
118.
|
|
a3,000,000
+ 700,000 + 4,000 + 118 |
|
b3,000,000
+ 700,000 + 4,000 + 100 + 10 + 8 |
|
c3,000,000
+ 70,000 + 4,000 + 100 + 18 |
|
dnota |
| 3. Write the following in digits: Seven thousand, four hundred twenty one |
|
a7,421 |
|
b7,0421 |
|
c70,
421 |
|
dnota |
| 1.2
|
| 4. Use the associative property to
rewrite (a + 9) + 11
|
|
a(a + 11)
+ 9 |
|
b(a + 9) +
9 |
|
ca + (9 +
11) |
|
dnota |
| 5. Simplify the expression of the
previous problem. |
|
aa + 20 |
|
ba + 11 |
|
ca + 9 |
dnota
|
| 6. Find the solution of the equation: n +
2 = 7 |
|
an = 9 |
|
bn = 5 |
|
cn = 14 |
|
dnota |
7. Solve the equation by first simplifying
each side of the equation as much as possible and then finding the
solution by inspection.
5 + (2 + t ) = 8 + 4. |
|
a t is
between 2 and 4 |
|
b t is
between 4 and 6 |
|
c t is
between 6 and 8 |
|
dnota |
| 1.3 |
8.
Add:
4,281
4,016 |
|
a8,207 |
|
b82,970 |
|
c8,297 |
|
dnota |
9. Add:
4,381
3,026 |
|
a7,497 |
|
b74,070 |
|
c7,407 |
|
dnota |
10. Joy is a full time student enrolled in
Math 105 at Chabot and part-time street vendor in Berkeley. She
keeps track of the price of each item she sold in the first hour (
!) of work on Telegraph Ave. What is the total revenue (in
dollars) she takes in during this time?
| item |
price (dollars) |
| silver ring |
60 |
| gold earrings |
45 |
| copper bracelet |
56 |
| silver neck piece |
97 |
| silver toe ring |
121 |
|
| a268 |
|
b379 |
|
c278 |
|
dnota |
| Number correct:
|