Problem Solving Strategies 1) A spider has 8 legs and a dragonfly has 6 legs. There are 20 spiders...
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Transcript of Problem Solving Strategies 1) A spider has 8 legs and a dragonfly has 6 legs. There are 20 spiders...
Problem Solving Strategies1) A spider has 8 legs and a dragonfly has 6 legs. There are 20 spiders and dragonflies altogether. There are 144 legs in all. Find the number of spiders and the number of dragonflies.
Problem Solving Strategies1) A spider has 8 legs and a dragonfly has 6 legs. There are 20 spiders and dragonflies altogether. There are 144 legs in all. Find the number of spiders and the number of dragonflies.
Guess and CheckUsing Table
No of spiders
No of legs
No of dragonflies
No of legs
Total no
Of legs
Total no
Of insectsCheck
10 10 x 8 = 80 80+60=14010x6 = 6010 20 X
11 11 x 8 = 8854+88 = 1429x6=549 20 X
12 12 x 8 = 96 8x6 =488 2096+48=144 √
Problem Solving Strategies1) A spider has 8 legs and a dragonfly has 6 legs. There are 20 spiders and dragonflies altogether. There are 144 legs in all. Find the number of spiders and the number of dragonflies.
Guess and CheckUsing Table
No of spiders
No of legs
No of dragonflies
No of legs
Total no
Of legs
Total no
Of insectsCheck
10 10 x 8 = 80 80+60=14010x6 = 6010 20 X
11 11 x 8 = 8854+88 = 1429x6=549 20 X
12 12 x 8 = 96 8x6 =488 2096+48=144 √
Guess and Check
1) Make a table to keep present your guesses and checks neatly.
2) Write number statements in your boxes.
3) Circle your answers.
4) Must have at least 3 guesses.(Even though your first guess is already
correct)
Problem Solving Strategies2) A florist gives away 3 stalks of roses forevery 4 bouquets of flowers sold. If she has16 bouquets of flowers to sell, how many stalks of roses does she need?
Problem Solving Strategies2) A florist gives away 3 stalks of roses forevery 4 bouquets of flowers sold. If she has16 bouquets of flowers to sell, how many stalks of roses does she need?
Find a pattern Using Table
Stalks of flowers
Bouquets of flowers
Count in 3s
Count in 4s
4
+ 4
8 12 16
3
+ 4 + 4
+ 3
6
+ 3
9
+ 3
12
Find a Pattern
1) Make a table to arrange the numbers neatly.
2) Include arrows to show the pattern.
3) Circle your answers.