Topic 1
Topic 2
Topic 3
Topic 4
Misc
100
Write two equivalent decimals to:
(2 x 102) + (4 x 1/10)
200.4 and 200.40
100
A) What is 3.442 + 93?
B) What is 4.62 + 95?
Compare your answers using < > =
96.442 < 99.62
100
What sum is represented? Explain how you found your answer.
1.15
There is one entire grid shaded, which is equal to 1 whole. There is 1 column shaded, which is equal to 1 tenth. There are 5 squares shaded, which are equal to 5 hundredths.
100
Oliver ate 6.5 boxes boxes of cookies, each weighing 2.9 ounces. How many ounces of cookies did Oliver eat?
6.5 x 2.9 = 18.85 ounces
100
Model 0.4 x 0.7. Explain how the grid helps you understand the product of this.
I first model 0.4 going one direction. Then, I model 0.7 going the other direction. The overlapped squares represents 0.4 of 0.7 There are 28 squares shaded, which equals 0.28
200
Which equations does 104 make true?
4 x ___= 40,000
___ x 15 = 150,000
___ x 2 = 2,000
4 x ___= 40,000
___ x 15 = 150,000
200
Estimate the correct answers:
29.39 + 98.32 = ?
464.2 - 246.23 =
30 + 100 = 130
460 - 250 = 210
200
A store sells cakes for $18.99. Levi buys 7 of them. What is the BEST estimate for how much Levi spent?
$105, $140, $200
$140
200
Taylor rode her bike 2.8 miles every day for 2 weeks. How much did she ride total in 2 weeks? Explain how you can use multiplication and addition to solve this.
2.8 x 14 = 39.2 miles.
You can multiply the amount she walked per day (2.8) by the amount of days (14) she walked. Multiplication is the same as repeated addition, or adding 2.8 14 times. Both answers give 39.2
200
0.03 is 1/10 of what decimal?
0.3
300
When you multiply a number by 104 how does the decimal point appear to be moving?
A) 3 places to the right
B) 3 places to the left
C) 4 places to the right
D) 4 places to the left
C) 4 places to the right
300
Jennifer and Lauren were having an ice cream sundae party. Jennifer bought ice cream and spent $9.78. Lauren bought toppings and spent $8.07. Draw and solve a model to show how much they spent together. Draw and solve a model to show the different in the amount they spent.
Total: $17.85
Difference: $1.71
300
I buy 23 bags of apples. Each bag has 12 apples. Write and solve an equation for a, the number of apples I buy.
a = 23 x 12
a = 276 apples
300
In 2.5 x 4.6, what are the partial products? What is 2.5 x 4.6 equal to?
.5 x .6 = .30
.5 x 4 = 2
2 x .6 = 1.2
2 x 4 = 8
2.5 x 4.6 = 11.5
300
Solve the following problems
3.5 x 103
56.3 divided by 102
.578 x 104
3.67 x 0.01
3.5 x 103 = 3,500
56.3 divided by 102 =.563
.578 x 104 = 5,780
3.67 x 0.01 = .0367
400
Compare the values of the 7s in the following number:
2,472 and 7,219
The 7 in 2,472 is 1/100 the value of the 7 in 7,219
OR
The 7 in 7,219 is 100 x the value of the 7 in 2,472
400
5.17 + ____ = 83.56
What decimal goes in the blank?
78.39
400
I want to sell 350 boxes of Girl Scout cookies before the end of spring, which is 6 weeks away. I hope to sell 45 boxes in each of the first 5 weeks. How many boxes will I sell in 5 weeks? Do you think I will meet my goal of 350 boxes sold in 6 weeks? Why or why not?
In the first 5 weeks I sold 225 boxes. Unless I sell 125 boxes in the last week, I will not meet my goal.
400
If 4.53 x 0.2 = (453 x 2) x (1/100 x 1/10),
What does 6.7 x 0.8 = ?
(67 x 8) x (1/10 x 1/10)
400
Use the grid to model 0.12 x 4. Explain how the model shows the answer 0.12 x 4
The grid shows 4 groups of 0.12 modeled. There are 48 squares shaded total. The value of one square is a hundredth, so 48 squares means the answer is 0.48.
500
Which of the following numbers, when rounded to the nearest tenth, round to 24.6?
24.53, 24.68, 24.55, 24.618
24.68 and 24.55
500
I grew a plant in science class. I measured it today and it was 32.1 centimeters. Last week it was 23.93 centimeters. How much has the plant grown since last week?
32.1 - 23.93 = 8.17 centimeters
500
A baseball stadium has 25 sections, each with 457 seats. How many seats does the entire stadium have?
457 x 25 = 11,425
500
John and Nina work together. John drove 3.6 miles to work. Nina drove 1.6 times this amount to work. Write and solve an equation to show d (Nina's drive) to work.
d = 3.6 x 1.6
d = 5.76 miles
500
Cameron buys 45 crates of bananas. Each crate has 21 bananas. How many bananas does Cameron buy? Explain how you can use estimation to check your answer.
45 x 21 = 945
45 x 20 = 900. This is an underestimate, so my exact answer of 945 makes sense because it is only a little higher than my estimate.