Number Know-How
What is 8 + 7?
What is 15?
2,4,6,8,___
What is 10?
You have $10 and spend $4. How much money is left?
What is $6?
In x+4, which letter is the variable?
What is x?
Which does not belong: 2,4,7,8? Explain.
What is 7? It is the only odd number. Accept other logical explanations.
Which number is greater: -3 or -8?
What is -3?
5, 10, 15, 20, ____
What is 25?
A pizza has 8 slices. Four friends share it equally. How many slices does each person get?
What is 2 slices?
Solve: x + 3 = 8.
What is x = 5?
Is 4 + 3 x 2 equal to 14 or 10? Explain.
What is 10? Multiply before adding (order of operations)
What is half of 36?
What is 18?
20, 17, 14, 11, ____
What is 8?
A shirt costs $20 and is discounted by $5. What is the new price?
What is $15?
Solve: 2x = 14.
What is x = 7?
Malik says -5 is greater than -2 because 5 is greater than 2. Is Malik correct?
What is no? -2 is greater because it is closer to zero.
Put these numbers in order from least to greatest: 5, -2, 0, -7.
What is -7, -2, 0, 5?
3, 6, 12, 24, _____
What is 48?
You earn $8 for each lawn you mow. How much will you earn for mowing 4 lawns?
What is $32?
Solve: x - 6 = 10
What is x = 16?
Which is a better estimate for 49 + 32: 50, 80, or 100? Explain.
What is 80? 49 roughly 50 and 32 is roughly 30
A number is multiplied by 4, and the result is 28. What is the number?
What is 7?
1, 4, 9, 16, ______
A ride costs $3 to enter and $2 for each game you play. You play 4 games. What is the total cost?
What is $11?
Solve: 3x + 2 = 14.
What is x = 4?
Two students solve 10 - 3 x 2. One gets 14 and one gets 4. Who is correct, and why?
What is the student who got 4? Multiply 3 x 2 first, then calculate 10 - 6.