Q&A - P3 Math

[fann]

Hi Signorwinter and Oldschool,

Thank you so much for the solution.

[fann]

Hi Signorwinter and Oldschool,

Thank you so much for the solution.

[crystal mom]

Hi!!

I need solution to the following maths problems:
1. \tAnne has five more 20 cents coins than 50 cents coins. The total amount of money she has is $4.50. How many of each coin does she have?
2. \tMrs Chan has some sweets to be given to her pupils.
If she gives each pupil 5 sweets, she will have 61 sweets left.
If she gives each pupil 8 sweets, she will need 2 more sweets.
How many pupils does Mrs Chan have ?

Thanks !!

[PapayaDad]

Anne has five more 20 cents coins than 50 cents coins. The total amount of money she has is $4.50. How many of each coin does she have?


1 x 50c and 6 x 20c = $1.70
2 x 50c and 7 x 20c = $2.40
3 x 50c and 8 x 20c = $3.10
4 x 50c and 9 x 20c = $3.80
5 x 50c and 10 x 20c = $4.50

[tianzhu]

crystal mom:

2. Mrs Chan has some sweets to be given to her pupils.

If she gives each pupil 5 sweets, she will have 61 sweets left.
If she gives each pupil 8 sweets, she will need 2 more sweets.
How many pupils does Mrs Chan have ?

Thanks !!

Hi

In order to give each pupil 3 more sweets (8-5), Mrs Chan needs 63 (61+2)sweets.

Number of pupils ------ 63/3 ------21

Best wishes

[tianzhu]

crystal mom:

Hi!!

I need solution to the following maths problems:
1. \tAnne has five more 20 cents coins than 50 cents coins. The total amount of money she has is $4.50. How many of each coin does she have?

Hi

Another way is to use the \"Grouping concept\"

For five 20 cents coins, we have$1.

4.5 – 1 – 3.5

Consider a set or group of 20 cents coin and 50 cents coins. This gives a total of 70 cents.

5 groups will give $3.50

Hence, we have

10 20 cents coins

5 50 cents coins

Best wishes

[jolenekoh]

Kate had 120 beads less than Connie. Connie had 230 beads left after giving 80 beads to Kate. How many beads did they have altogether?

[Maths Hub]

jolenekoh:

Kate had 120 beads less than Connie. Connie had 230 beads left after giving 80 beads to Kate. How many beads did they have altogether?

Beads at start:
Connie: 1 unit
Kate: 1 unit - 120

Beads in the end:
Connie 230 (after giving 80 to kate)

In order to find Connie at start, we add back 80.

230+80=310

Kate at start: 310 - 120 = 190

Total at start: 190 + 310 = 500

Hope that helps.

[jolenekoh]

Thank you

Maths Hub:

jolenekoh:

Kate had 120 beads less than Connie. Connie had 230 beads left after giving 80 beads to Kate. How many beads did they have altogether?

Beads at start:
Connie: 1 unit
Kate: 1 unit - 120

Beads in the end:
Connie 230 (after giving 80 to kate)

In order to find Connie at start, we add back 80.

230+80=310

Kate at start: 310 - 120 = 190

Total at start: 190 + 310 = 500

Hope that helps.

[crystal mom]

Thanks all for your replies!!