Problem 1 :
____ ÷ 3 = 5
Solution :
Let x be the missing number.
x/3 = 5
Dividing an unknown by 3, we get 5. Remembering 3 times table, 5 x 3 = 15. So, dividing 15 by 3, we will get 5.
Problem 2 :
Sarah bought six candy bars. It cost $4.20. How much did each candy bar cost ?
Solution :
Number of candy bars to be bought = 6
Total cost = $4.20
Cost of each candy bar = 4.20
= 4.20/6
= 0.7
So, cost of each candy bar is 0.7
Problem 3 :
Find the missing term in the sequence below.
156, 169, ___, 195, 208, 221, 234
Solution :
156, 169, ___, 195, 208, 221, 234
156 + 13 ==> 169
195 + 13 ==> 208
208 + 13 ==> 221
221 + 13 ==> 234
Then,
169 + 13 ==> 182
So, the missing term is 182.
Problem 3 :
84 ÷ 7 = ?
Solution :
84 ÷ 7 = ? Quotient = 12 Remainder = 0 |
Problem 4 :
How many hundreds are in the number 34000 ?
Solution :
To know the given number is multiple of how much hundreds,
34 x 1000 = 34000
340 x 100 = 34000
So, there are 340 hundreds in 34000.
Problem 5 :
Holly has 22 nickels. How much money is that ?
Solution :
Conversion between nickels, dollars and cents.
1 nickel = 5 cents, that is 0.05
100 cents = $1
22 nickels = 22 x 0.05
= 1.1
Converting decimal as integer, we get
= 1.1 x 100
= 110
So, the amount he has is $1 and 10 cents.
Problem 6 :
Double 20
Solution :
Doubling 20, we get
= 20 x 20
= 400
Problem 7 :
In the parking lot there are 13 vehicles. There are 3 SUVs. What fraction of the vehicles are not SUV ?
Solution :
Total number of vehicles = 13
Number of SUV = 3
Number of vehicles those are not SUV = 13 - 3
= 10
Fraction of vehicles are not SUV = 10/13
Problem 8 :
Jessica went to the cafe and ordered a turkey and swiss cheese sandwich, a cup of potato salad and a milkshake. The sandwich cost $2.58, the potato salad cost $1.23 and milkshake cost $1.28. How much did Jessica's meal cost in all ?
Solution :
Cost of meal is $5.09.
Problem 9 :
Maria made a flag to display during red cross month. The flag was 9 feet long and 2/3 feet wide. She drew a large red cross in the middle of it. What is the area of the flag ?
Solution :
Length of the flag = 9 feet
Width of the flag = 2/3 feet
Area of flag = length x widht
= 9 x (2/3)
= 6 square feet
So, the required area of the flag is 6 square feet.
Problem 10 :
Max is taking a 24 hour walk challenge. He is trying to stay awake of 24 hours and plans to walk as far as he can. Each hour he plans to sit and rest only 8 minutes. If he is able to do this, how long will he spend walking and not resting during during 24 hours ?
Solution :
Number of hours he is walking = 24
Number of minutes, he is spending for rest = 8 minutes for hour
Time taking for rest = 8 x 24
= 192
= 180 + 12
= 3 hours and 12 minutes
So, he is taking 3 hours and 12 minutes.
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