4. solving word problems mentally

Solving Word

Problems Mentally

Name the place value of the underlined digit.

485

785362

109376

Subtract each number in the outer circle from the number in the inner

circle.

32 41

56 25

87

32 20

14 53

75

11 21

33 12

43

37 52

34 56

96

Fely helped her mother sold pineapples in the market. She had

48 pineapples to sell. She 36 pieces in the morning. How many

pineapples were not sold?Analyze and solve the problem mentally.

What is asked in the problem?What are the given facts?What operation are you going to use?What will be the number sentence?How will you solve it mentally?

Individual Work:

1. Aling Nena washed 14 pieces of clothes while Rosa washed 26 pieces. How many more pieces did Rosa wash?

2. The following day, Aling Nena ironed 34 pieces of clothes. Of the 34 pieces, 12 were blouses and the rest were t-shirts. How many t-shirts did she iron?

3. A flower vendor had 85 roses to sell. She sold 63 roses in the morning and the remaining roses in the afternoon. How many roses did she sell in the afternoon?

4. Me. Santos planted 38 tomato seedlings and 15 eggplant seedlings. How many more tomato seedlings did Mr. santos plant?

5. There are 98 pupils in the school ground. Forty-two of them are Grade 3 and the rest are Grade 4. How many Grade 4 pupils are there?

Remember:

In solving word problem mentally involving subtraction, analyze the problem first, then subtract the ones place and the tens place.

Solve the problems mentally. Write you answer on a piece of paper or in your notebook.1. Cindy had 95 pesos. She spent 30

pesos for juice and biscuits. How much money was left?

2. Sarah has 78 baseball cards. Tricia has 40 cards. Who has more cards? How many more?

3. The sum of the two numbers is 75. One number is 32. What is the other number?

4. Give the number that is 21 less than the other number, if the other number is 57.

Solve the following problems.

At the market, Mar, Kim, Mae and Ken helped their mother count the vegetables she has to sell. They recorded the vegetables they counted.Name Eggpla

ntsTomato

esMar 88 76Kim 32 54Mae 59 67Ken 27 15

Questions:

1. How many more eggplants did Mar count than Kim?

2. How many more eggplants did Mae count than Ken?

3. How many more tomatoes did Mar count than Kim?

4. How many more tomatoes did Mae count than Ken?

5. How many more eggplants than tomatoes did Mae count?

Assignment:

Study the price list of fruits per kilogram then answer the questions that follow.

Fruit Stand & Price per KilogramApples - 89.00Banana - 30.00 Mangoes - 68.00 Oranges - 32.00Ponkan - 44.00

1. What fruit is the cheapest?

2. Which fruit is the most expensive?

3. How much more expensive are apples than mangoes?

4. How much cheaper are oranges than ponkan?

5. How much cheaper are bananas than ponkan?

6. How much more expensive are mangoes than oranges?

7. Which is cheaper, mangoes or ponkan? How much cheaper?

8. Which is more expensive, oranges or bananas? How much more expensive?