Intergers
What is
3 + (-10)
answer... -7
+++
- - - - - - - - - - -
Round to the nearest tens place
544
answer... 540
tens place is the second place value to the left of the decimal
the 4 in the ones place tells the 4 in the tens place to stay the same
Rounding Rules
0-4 stay the same
5-9 goes up 1
answer... 5/2
10/4 can be simplified to 5/2 because both the numerator and denominator are divisible by 2.
While playing football, Jose gained 5 yards, then lost 2 yards. What was his total yardage? Write the addition problem and solve.
And the correct answer is….
5 + (-2) = 3 yards
What is
(-4)(6)
answer... -24
Parentheses means multiplication
- x + = negative answer
Round to the nearest tenths place
543.387
answer... 543.4
the tenths place is the first number to the right of the decimal.
What is
6/3 - 2/3 simplify your answer if needed
answer... 4/3
since the denominators are the same subtract the numerators. 4/3 is in its simplest form.
Melanie loses 2 pencils each week. After 4 weeks, how can you express her change in pencils?
And the correct answer is….
-8
What is
(6)(-7)(4)
answer... -168
Parentheses means multiplication
- x + = negative answer
Round to the nearest hundreds place
1,984
answer... 2,000
the hundreds place is the third place value to the left of the decimal.
since the 8 in the tens place tells the 9 to go up, we have to carry that over to the thousands place
3/4 / 4/5
answer 15/16
KFC
3/4 x 5/4
then multiply across with the numerator and the denominator. 15/16 is in its simplest form
A bakery sold 237 cupcakes yesterday. If they want to estimate how many cupcakes they sold to the nearest ten, how many cupcakes did they sell?
The answer is...
240
What is
(-3) + (-1) + (5)
answer... 1
same signs add
different signs subtract
- - - -
+++++
Round to the nearest hundredths place
389.498
answer... 389.5
the hundreths place is the second place value to the right of the decimal.
the 8 in the thousandths place tells the 9 to go up. We then have to carry that over into the tenths place.
What is
2/10 x 4/6 simplify if needed
answer 2/15
when we are multiplying fractions we just multiply straight across with the numerators and the denominators
2 x 4 = 8
10 x 6 = 60
both numbers are even and can their Greatest Common Factor (GCF) if 4. This means we can divide both numbers by 4 to get our fraction in its simplest form.
A bakery sold 123 cupcakes on Monday and 56 cupcakes on Tuesday. Estimate the total number of cupcakes sold for both days by rounding each number to the nearest ten and then adding them together.
The answer is...
180
What is
-10 + 3 - 1
answer... -8
- - - - - - - - - - -
+++
Round to the nearest whole number
345.432 + 234.465
answer... 580
the sum of the two numbers is
579.897
the nearest hole number is the ones place; which is the first place value to the left of the decimal. the 8 in the tenths place tells the 9 in the ones place to go up. We then have to carry that over into the tens place.
What is
4/3 + 5/6 simplify if needed
answer... 13/6
The Least Common Multiple (LCM) for the denominators is 6.
In order to convert the first fraction we must multiply the numerator and denominator by 2.
This turns the first fraction into 8/6 and now we can add the numerators. 13/6 is in its simplest form.
A baker used 2/5 of a cup of flour for a cake and 1/3 of a cup of flour for cookies. How much flour did they use in total for both the cake and cookies?