Mental Math and Reflexes

• Begin at 50. Count by 5s to 100.• Begin at 0. Count by 25s.• Begin at 25. Count by 25s.• Begin at 10. Count by 5s.• Begin at 137. Count by 10s.• Begin at 75. Count by 25s.• Begin at 200. Count by 5s.• Begin at 1,020. Count by 10s.• Begin at 100. Count by 25s.

Math Message

• You buy an apple that costs 37 cents.

• Write P, N, D, or Q to show the coins you use to pay the exact amount.

• Who would like to share their solutions?

How to Make Change Counting Up

• You buy an orange for 60 cents. You put 3 quarters in the vending machine.

• How much change should you receive?

• 15 cents

1. You start with the cost of the item– 60 cents2. Count up to the amount of money used to

pay for the item—75 cents

I Bought I Paid My Change Was:

An Orange for 60 Cents

Q Q Q D N

• You buy milk for 35 cents. You put 4 dimes in the vending machine. How much change should you receive?

• 5 cents• You buy ice cream for 40 cents. You put 2 quarters in the

vending machine. How much change should you receive?• 10 cents• You buy yogurt for 70 cents. You put 3 quarters in the

vending machine. How much change should you receive?• 5 cents• You buy a pie for 45 cents. You put 2 quarters in the

vending machine. How much change should you receive?• 5 cents

Making Change

• You buy candy for 65 cents. You put 3 quarters in the vending machine. How much change should you receive?

• 10 cents• You buy a slice of pizza for 85 cents. You give

the clerk $1. How much change should you receive?

• 15 cents

• Practice Exact Change• Exact Game Sliding Coin Machine• Counting Coins Game• Give Change Review

Time Rhyme

Now look at H the hour hand.H is just passed ______.Now look at M theMonster Minute HandStart at 1 and count by 5s ____.

___:____