Operations & Expressions
Evaluate: 118 × (2/3 + 2/6) − 6 × 4
2/3 + 2/6 = 4/6 + 2/6 = 6/6 = 1.
118×1 = 118.
6×4 = 24.
118 − 24 = 94.
Final: 94.
Find 2/3 + 1/4.
Common denominator 12: 8/12 + 3/12 = 11/12. Final: 11/12.
50 lb ÷ 8 groups — write as a fraction
(50/8 (pounds per group).
Simplifies to 6 2/8 or 6 1/4 lb.
Value of 4 in 5,472 and in 624; how many times greater?
100 times greater.
3,000 mL into each of 5 pitchers. How many liters total?
3000 mL / 1000 = 3L
3L x 5 pitchers = 15 L total
Write an expression for "12 times the difference between 57 and 24
12(57 − 24).
Explanation: take the difference then multiply by 12.
3/5 + 3/4 =
27/20
Estimate 50 ÷ 8 — between which two whole numbers?
between 6 and 7.
(6 2/8 or 6 1/4)
7500 ÷ 100 = ?
Move decimal two left or remove two zeros: 75.
Convert 5 meters to cm
5x100 = 500
Evaluate: (18 + 9) ÷ 3.
(18+9)=27;
27÷3=9.
Final: 9.
Compute 3 5/8 − 2 6/8 (show work).
Rename: 3 5/8 = 2 13/8. 2 13/8 − 2 6/8 = 7/8. Final: 7/8.
7/8
Which number has 9 valued 10× its value in 19? (960, 689, 498, 302)
In 19, 9 = 9. Ten times = 90 → 498 (9 in tens place = 90).
1/4 + 3/8
5/8
Compare 6 + (14 ÷ 2) and (6 + 14) ÷ 2; compute both.
6 + (14 ÷ 2) = 6 + 7 = 13.
(6 + 14) ÷ 2 = 20 ÷ 2 = 10.
Parentheses change order.
2/3 − 1/4 =
5/12
Sally bought 2/3 pounds of flour for a baking contest and had 1/4 pounds left over when she finished. How many pounds of flour did she use?
5/12
What is 370 x 102
What is 370 X 105
37,000
37,000,000
Matthew ran 25 kilometers in a race over the weekend. How many meters did Matthew run?
25,000 meters
3 × (18,932 + 921)=
18,932 + 921 = 19,853
19,853 x 3 = 59,559
2/3 + 1/4 + 2/6=
15/12 or 1 3/12
50 lb shared by 9 people = ?
50 ÷ 9 = 50/9 = 5 5/9 lb.
In the number 4,561 the 5 digit has a value of _____
In the number 535 the digit 5 has a value of ______
The value of 5 in 4,561 (In exponential form) ____
500
5
102
The fifth grade has 152 students. Each student has 18 pencils. How many pencils do the students have altogether?
2,736