Many of our students or children, perhaps only 2 of 10 students who say I like Math. Most students do not like Math. The reason is classical, including  difficult, lazy and too much thinking.

Teachers and parents play an important role in student learning or child development. Teachers and parents who proactive towards education children will encourage comfort in learning subjects including Mathematics.

Mathematics is not identical with doing problems. But working on practice questions is also an important part in learn math. When teachers and parents giving Math question, should be accompanied by evaluation and reflection. With these dynamics, I believe the children can say “I Love Math”.

LOVE MATH

One way to love math is do math problem. And in this posting I wolud like to share Math problem for primary school.

1. Three circular disks of radius 7 cm each are belt, see figure. What is the length of the belt?

2. The volume of a small balloon is 2 liters and a larger balloon is 5 liters. The small balloon is increased at a rate of 0.3 liters per second. The larger balloon is
decreased at a rate of 0.12 liters per second. After how many seconds will the two balloons have the same volume?

3. A train travels between two stations. The train will be on time if it runs at an
average speed of 60 km/hour, but will be late by 5 minutes if it runs at an average speed of 50 km/hour. What is the distance between the two stations?

4. Twice the number of marbles in bag A is less than the number of marbles in bag B. The sum of the number of marbles in bags A and C is less than the number
of marbles in bag B. There are more marbles in bag D than in bag B. There are 6 marbles in bag C and 9 marbles in bag D. How many marbles does bag B contain?

5. Now we are in the year 2004. The ratio of ages of my father, my mother, and my younger brother is 12:9:1. Five years from now, my father will be 41 years old. In what year was my younger brother born?

6. The product of two positive integers is even, but not divisible by 4. Is their sum odd or even?

7. On the table, there are 6 coins each of the values $5, $10, and $50. Deni takes $75. The number of coins Deni takes is more than 5, but less than 9. Does Deni take all the three types of coins? If not, which type does he not take?

8. The weight of a small box, two medium boxes and a large box altogether is 10 kg. The weight of a small box, two medium boxes and two large boxes altogether is 15 kg. What is the total weight of two small boxes and four medium
boxes?

9. Replace the letter A with an odd digit and the letter B with an even digit, so that 12 is a factor of the number A579B. Find the all possible values of A579B.

10. Find the missing digits.

11. Find the total area of the shaded regions in the figure.

12. In the following figures, the three squares have equal areas. Determine whether the areas of the three shaded regions in each square are also equal.

13. If the pattern below is continued, what is the percentage of the area of the shaded regions in the third picture compared to the area of the largest square?

14. Four wheels A, B, C, and D are connected by belts, see figure. The wheels B and C are fastened together. The diameters of wheels A, B, C, and D are 12 cm, 36 cm, 9 cm, and 27 cm, respectively. The wheel A turns at a speed of 450 rotations per minute. At what speed does the wheel D turn?

15. Laila’s savings in a bank is $100. Tina’s savings is $40. Every end of the week, Laila withdraws $3 from her savings. At the same time, Tina always deposit $2.40 into her savings. After how many weeks will Laila’s savings be $6 more than Tina’s savings?

Bicycling is a great way to exercise save fuel, and help the environtment. We can all make the earth a better place by riding bicycles.

Math facts used for this worksheet:
Time = distance/speed
1 kilometer = 1000 meters

Use a calculator to solve the problem below.

1. Andi rides his bike 16 kilometers to school. If Andi’s average speed while riding to school is 12 kilometers per hour, how long will it take him to get to school ?

2. Sarah’s bike travel 2 meters each time her wheels go around one complete revolution. How many times would Sarah’s wheel go round to travel 1 kilometer
on her bike ? (Hint, there are 1000 meters in a kilometer)

3. Each time Jil turns the pedals around one complete turn, her bike travel 2.5 meters. If Jill turned the pedals around 800 times, how many meters would she have traveled ?

4. There are 1000 meters in 1 kilometer. Using your answer in problem 3, how many meters did Jill travel when she turned the the pedals on her bike 800 times ?

5. If Jill’s bike travel 4 meter each time she turns the pedals are complete turn, how many times would she have to turn the pedals to travle 3 kilometers ?

Math Answer:

1. Time = distance/speed (16/12= 1.3 hours)
2. 1000 km/2 meter = 500 wheel rotations
3. 800 x 2.5 meters = 2000 meters
4. 200/1000 = 2 kilometers
5. Jill wolud have turned the pedals 750 timesto travle 3 kilometers if her bike traveled 4 meters each time the pedals were turned. This is calculated by first converting 3 kilometers into meters: 1000 meters  x 3 = 3000 meters. You then divide 4 meter into 3000 meters to determine the number of times Jill needed to turn the pedals to travle 3 kilometers: 3000 meters/4 meters = 750 pedal rotations.

Click here to download math problems other Indonesian language. Or click here to download the questions in English. For those who have not become a member, please list first through the right side column of this blog. Or if you want to be a Premium member, please click here.

1. One of home completed within 5 months, 3 weeks 5 days. How many days a house is completed?

2. I walk 12 steps forward. Having reached the goal, I’m back again with the same number of steps. If the steps are written in mundurku integers, what is it?

3. My mother go to the market to buy 3 ½ pounds of sugar, 4 ¼ kg of rice, and 2 ¾ kg of salt. At home, kg rice 2 ½ tanak. How much do students groceries Mother?

4.In a map distance of the town A to town B is 2 cm, the city B to city C 4 cm, and the city C to city D 3 cm. Scale on the map 1: 523,000! Find the distance from city A to city D through B and C of the truth!

5. My mother age :  my Sister = 11: 1. When Mom picked brother, both weight is 60 kg. How many pounds brother?

6. A Bookstore has a profit 18% of the initial capital USD 165,000,000.00. How much capital gains plus the bookstore?

7. A temperature in a refrigerator minus 10 degree in Celcius. How many degrees of temperature when measured with a thermometer Reamur? If the Fahrenheit thermometer is measured by whether the result is also a minus?

8. Phone cost in New York is USD $ 70,000.00 per minute. If the brother called his friend in New York for 4 minutes 40 seconds, what is the cost?

9.Bahri set sail to fish at 23:00. When returning to land at the time showed 03.30. How long Bahri sailing fishing?

10. The comparison age between my uncle and Andi is 5: 3.  And Uncle: Sholeh = 4: 3. Number of 82-year age three. What is the age Uncle?

Regards
Istiyanto

If you want to be a premium member, please click here. Or if you want to collect math problems in English, please click here. Download math problem ?
1.Draw quadrilateral ABCD in the plane coordinates with the provisions of point A (2, 1), B (-1, 2), C (-2, 2) and D (1, -2)!

2.Mobile phone ringing every 12 minutes and phone B rings every 6 minutes. If the phone rings with at 08.20 o’clock at how the phone will ring together again?

3.My mother bought 3 / 5 meter tape. Ribbon was given to Ana ¼ meters. Then she bought another 3 / 2 meters. How many yards ribbon Mother now?

4.The distance city A to city B in the map 10 cm. Calculate the actual distance given map scale 1: 1.000.0000!

5. The distance of Semarang to Kudus  is 58 km. Arman motorcycles from Semarang and 07.45 o’clock until 09.45 o’clock Holy. What is the average speed of travel Arman?

6.Farid has 6 fruit rope, each length of rope 70 cm, 200 mm, 5000 mm, 20 cm, 300 mm and 10 cm. Of the six strings are connected into 2 pieces the same length of rope. What is the length of each string?

7.The comparison aged between father and mother age is 3: 2. If the 42 year old mother, calculate the age of my father!

8.Ani have some money. 5 / 9 of the money was given to his brother. Then Lady Ani gives the amount of money equal to 8 / 9 part of the money Ani. How much money Ani now, if the money first Ani USD $ 6000.00?

9. Father’s footsteps width is 40 cm. Meanwhile, younger brother’s footsteps 32 cm. The two walked together to the place of worship. Which steps both jointly set foot into the ground?

10. One of traders have 55 kg of rice. A total of 4 / 5 part of the rice sold. How many kg of rice that has not sold?

Regards
Istiyanto

Step 2
Find out, what am I supposed to find out. If it is too complicated to understand at the first time read the problem again and again.

Step 3
Look for clues words to show which operation to use,
Addition:
and…add…
addend…plus…
sum…more…
more than…
in all…total…
all together…
perimeter…
combined

Suctraction
Minuend…subtrahend
difference…subtract
minus…take away…
less than…remain…
are left…have left
how much more
fewer…are not…
decreased by…
how much change (money) is left

Multiplication
factor…product…times…of…
multiplied by…
area…volume…
each…twice=2x…thrice=3x… …how many times more…

Division
dividend…divisor
…quotient…
divided by…per…
half = ÷ 2…
separated…rate…
ratio…fraction…
decimal…part…
percent…

Beware…
Of red herrings! (false clues) In this case, numbers that are just there to trick you, but are not needed to solve the problem.

What to do
if you’ve read the question more than once, and you still don’t know which way to turn..

Then just do something!
You know there are four operations and you’ll have to do at least one of them. So pick one.
You know you need to do that operation using at least two numbers, so pick two of the numbers in the problem. Then either add ‘em, subtract ‘em, multiply ‘em, or divide ‘em. You may be wrong, but YOU MAY BE RIGHT!

Step 4
Solve the problem.

Step 5
Now think… Does this answer make sense? Would I expect this to be the answer?

Remember
If you ONLY answer half the question, EVEN if you get that half 100% right… That’s only 50% of the question… And 50% is an F!

Step 6
Ask yourself… Are there more parts to this question? (Some questions have two or more parts!) Check your work… just work backwards, using the opposite operations and see if you end up where you began.

Congratulations!
That’s how to solve a math problem.
Some more clues for math sleuths…
Always try something.
Never try nothing.
Show your work and hand it in. Even if you don’t make it the whole way, you may have come close.

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