Reveal Math · Unit 1 · Supplemental

Foundation Math Skills

Grade 6 · Number sense, whole-number operations, place value, rounding & estimation

Name: Date:

🔢Whole number — a counting number with no fraction or decimal (0, 5, 27).

📍Place value — what a digit is worth based on its spot (in 5,243 the 5 means 5,000).

➕Sum — the answer when you add.

✖️Product — the answer when you multiply.

➗Quotient — the answer when you divide.

🎯Estimate — a close, rounded guess (not exact).

Worked Example

Step 1: Line up by place value (ones under ones).

Step 2: Add the ones: 3 + 8 = 11. Write 1, carry the 1.

Step 3: Add the tens: 4 + 7 + 1 = 12. Write 2, carry the 1.

Step 4: Add the hundreds: 1 + 2 + 1 = 4.

Answer: 421. Check: 140 + 280 = 420 (close, so it makes sense).

The sum of and is .

To estimate, I round to .

The digit is in the place, so it is worth .

Directions: Solve each problem. Use the work space and the hint cue if you need help. Show all your steps.

24 + 35 = ______
Hint: add the ones (4 + 5), then the tens (20 + 30).
143 + 278 = ______
Hint: line up the digits and carry when a column is 10 or more.
500 − 237 = ______
Hint: count up from 237 to 500.
23 × 4 = ______
Hint: break it up — (20 × 4) + (3 × 4).
12 × 5 = ______
Hint: (10 × 5) + (2 × 5).
84 ÷ 4 = ______
Hint: 4 × 20 = 80, then share the leftover 4.
What is the place value of the 7 in 3,714?
Hint: count from the right — ones, tens, then…
Round 4,672 to the nearest hundred. ______
Hint: look at the tens digit. Is it 5 or more?
Estimate 48 × 21 by rounding each number first. ______
Hint: round 48 to 50 and 21 to 20.
Write 2,056 in expanded form. ______
Hint: write each digit times its place value, then add.