Estimating Costs in 3rd Grade Math

The video tutorial for third graders covers estimating costs, rounding numbers, and practical estimation strategies. It includes warm-up exercises, strategies for estimating sums, and practical applications like budgeting. The tutorial also involves exercises from the math journal, focusing on arrays and subtraction, helping students understand the importance of estimation in everyday scenarios.

What is 18 closer to, 10 or 20?

• 25

• 20

• 10

• 15

Is 21 closer to 20 or 30?

• 25

• 15

• 20

• 30

Which number is 188 closer to, 180 or 190?

• 175

• 180

• 190

• 185

Is 105 closer to 100 or 110?

• 115

• 110

• 100

• 95

For the addition problem 322 + 487, which rounded numbers would make the estimation easier?

• 350 + 450

• 400 + 500

• 300 + 500

• 320 + 490

After spending $38 on watercolors and $19 on brushes, how much does the art club have left if they started with $100?

• $43

• $67

• $40

• $53

How many miles did the third child ride if the first rode 9 miles, the second 8 miles, and together they rode 23 miles?

• 8 miles

• 6 miles

• 5 miles

• 7 miles

How many pennies does each child get if 16 pennies are equally shared between two children?

• 9 pennies

• 7 pennies

• 8 pennies

• 10 pennies

What is the result of 17 minus 8?

• 7

• 10

• 8

• 9

What do you notice about the total number of circles in each array from the drawn arrays?

• All are odd numbers

• All are even numbers

• All are prime numbers

• No specific pattern