•Review rounding down. Explain that when the cents are less than 50¢, we round down to the next lower dollar amount. For example: $1.25 rounds down to $1.00, $4.49 rounds down to $4.00
•Have students round down for these amounts: $3.15, $5.12, $2.35.
Step 3 Guided Questions
Read the menu with students. Ask questions to check for understanding:
1.How many sandwiches are on the menu? (four)
2.Which sandwich costs the least? How much is it? (PB&J; $2.95)
3.Which sandwich costs around $6? How much is it exactly? (roast turkey; $5.85)
4.Which soup costs about $4? (lentil)
5.Which drinks cost less than $2? How much is each one? (milk, $1.80; juice, $1.75;coffee or tea, $1.05)
Let’s Work Together
•Introduce Grandpa’s Menu Game with these problems:
– Grandpa says, “I’m thinking of a sandwich that costs more than $4 but less than $5” What sandwich is he thinking of? (grilled cheese)
– Grandpa says, “I’m thinking of a soup and a drink that together will cost about $3.” What soup and drink is he thinking of? (tomato soup and coffee/tea)
• Work through the problems on the page.