Transcript Beginning of the Year Math Review

Beginning of the Year
Math Review
Houghton Mifflin ©2005
Add & Subtract Whole
Numbers
Helpful Reminders
When adding and subtracting, always
remember to write the numbers in
straight columns.
Pay attention to which operation you
are being asked to solve.
Always start working with the ones
place.
Chapter 2 Vocabulary
* addends= two or more numbers
added together
* difference= the answer to a
subtraction problem
* sum= the answer to an
addition problem
Solve
Write the equation and the answer.
8 reduced by 4
8-4=4
7 more than 6
6+7=13
take 12 from 15
15-12=3
Examples:
Teacher solves on board.
5,163
+ 2,847
5,163
- 2,847
8,010
2,316
Chapter 2- Your Turn!
16,395
+12,768
16,395
-12,768
29,163
3,627
Congratulations! Way to go!
Multiply Whole Numbers
Helpful Reminders
 Begin by multiplying the ones place. Regroup if
necessary.
 Multiply the tens place. Add any regrouped
tens. Regroup if necessary.
 Multiply the hundreds. Add any regrouped
hundreds.
 When multiplying by a number that has more
than one digit, remember to put down a zero
placeholder and continue with the steps above.
 When finished multiplying, add to find the
answer.
Chapter 3 Vocabulary
* factor= one of two or more numbers
that are multiplied to give a
product
* product=
the answer to a
multiplication problem
Examples:
Teacher solves on board.
973
x 42
40,866
1,369
x
65
88,985
Chapter 3- Your Turn!
843
x 7
2,398
x 14
5,901
33,572
Congratulations! Way to go!
Divide By One-Digit
Helpful Reminders
 Use basic facts and rounding to decide
where to place the first digit of the
quotient.
 Divide then bring down.
 Write the remainder (if necessary).
 Pay special attention to what you are
doing when there are zeros in the
problem.
 Be careful when saying “divided by” or
“divided into”.
Chapter 4 Vocabulary
* dividend= the number that is being
divided
* divisor= the number that is being
divided into another number
3
R
2
* quotient= the answer to a
division problem
3 11
-9
*remainder= The # that is left
over after the
2
division is done
Examples:
Teacher solves on board.
746 R 7
8 5,975
96,349 R 1
9 867,142
Chapter 4- Your Turn!
2,023
9 18,207
16,715 ÷ 5= 3,343
3,343
5 16,715
Congratulations! Way to go!
Congratulations!