Legos
4.NBT.5
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces.
How many LEGO pieces are there altogether?
Introduction
Estimate
Estimate:
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
Estimate
Estimate:
30 x 30 = 900
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
Solve
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
Debrief
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
What equation did you write to represent the situation?
Debrief
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
How does the equation below represent the situation?
Debrief
Let’s share!
How did you calculate the number of Legos?
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
Debrief
10 x 25 = 250
20 x 25 = 500
30 x 25 = 750
2 x 25 = 50
750 + 50 = 800
LEGO pieces
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
Debrief
10 x 25 = 250
20 x 25 = 500
30 x 25 = 750
2 x 25 = 50
750 + 50 = 800
LEGO pieces
An employee at the Main Street Toy Store is ordering 32 DUPLO My First Playhouse LEGO sets. Each LEGO set has 25 pieces. How many LEGO pieces are there altogether?
Is this close to our estimate of 900?
Practice
Estimate and solve
63 x 21
1 | x | 6 | = | 6 |
2 | x | 6 | = | 12 |
3 | x | 6 | = | 18 |
4 | x | 6 | = | 24 |
5 | x | 6 | = | 30 |
6 | x | 6 | = | 36 |
7 | x | 6 | = | 42 |
8 | x | 6 | = | 48 |
9 | x | 6 | = | 54 |
10 | x | 6 | = | 60 |
6 times table
Estimate:
Practice
Estimate and solve
54 x 39
1 | x | 9 | = | 9 |
2 | x | 9 | = | 18 |
3 | x | 9 | = | 27 |
4 | x | 9 | = | 36 |
5 | x | 9 | = | 45 |
6 | x | 9 | = | 54 |
7 | x | 9 | = | 63 |
8 | x | 9 | = | 72 |
9 | x | 9 | = | 81 |
10 | x | 9 | = | 90 |
9 times table
Estimate:
Practice
Estimate and solve
72 x 14
1 | x | 7 | = | 7 |
2 | x | 7 | = | 14 |
3 | x | 7 | = | 21 |
4 | x | 7 | = | 28 |
5 | x | 7 | = | 35 |
6 | x | 7 | = | 42 |
7 | x | 7 | = | 49 |
8 | x | 7 | = | 56 |
9 | x | 7 | = | 63 |
10 | x | 7 | = | 70 |
7 times table
Estimate:
Practice
Estimate and solve
81 x 67
1 | x | 8 | = | 8 |
2 | x | 8 | = | 16 |
3 | x | 8 | = | 24 |
4 | x | 8 | = | 32 |
5 | x | 8 | = | 40 |
6 | x | 8 | = | 48 |
7 | x | 8 | = | 56 |
8 | x | 8 | = | 64 |
9 | x | 8 | = | 72 |
10 | x | 8 | = | 80 |
8 times table
Estimate: