Story Problems
Exponents
Estimation
Number Problems
Moving Decimals
100
A gardener planted 0.28 of his garden with pumpkins seeds. If his garden is 23.7 square yards in size, how many square yards are planted with pumpkin seeds?​
6.636
100
0.05 x 10³ = ?​
50
100
Determine the best estimate of the product 79 and 0.89. Show your work.​
72
100
4.5 x 7.8=
35.1
100
1.34 x 100=
134
200
Dean worked 24.5 hours one week. He earned $11.30 per hour. Calculate how much money he earned that week.
$276.85
200
0.68 x 10² = ?​
68
200
2.1 x 5.5=
What is 11.55
200
7.26 x 10=
72.6
300
Frank buys food for his family. Chicken is $4.59 per pound. Potatoes are $0.65 each and dinner rolls are $2.79 per bag. What will Frank spend if buys 4 pounds of chicken, 5 potatoes, and a bag of dinner rolls?​
$24.40
300
Estimate: 6.7 x .84=
5.6
300
77.3 x 8.0=
618.4
300
123.3 x 1000=
123,300
400
Vito buys 2.5 dozen eggs. Each egg costs $0.17 each. Write an equation to find the total cost using variable t and then solve for t.​
30 x 0.17 = t t=$5.10
400
12.3 x 10^4
123,000
400
Estimate: 4.75 x 1.2=
5
400
44.17 x 3.2
141.344
400
.065890 x 100
6.5890
500
Dean is training for his upcoming MMA match. He is training 4.5 hours on Monday and Wednesdays and 1.5 hours on Tuesdays and Fridays. How many hours does Dean train over 5 weeks?​
60 hours
500
45.33 x 10^6
45,330,000
500
The singing club is having a bake sale. For the first sale, they made $95.88. They are having three more. Frank says they will make $383.52. Dean says they will make $3,835.20. Use estimation to explain why Dean’s reasoning is wrong.
You round $95.88 to 96 and multiply by 4 (the number of bake sales). The answer is 384. This is close to Frank's prediction of $383.52. Dean's prediction is much higher. He may have put the decimal in the wrong place.
500
0.0004 x 2.00
.0008
500
447.993 x 1000000
447,993,000
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