Grid Math Mastery Worksheet
GRID MATH MASTERY
3-Digit Addition with Regrouping
Name:
Date:
Score: / 4
Directions: Add the digits starting in the ones place. Write regrouped digits in the top dashed boxes. Page 1 of 9
1 478 + 285
Regroup Ones & Tens
Th H T O
4
7
8
2
8
5
Check: Does your answer make sense? Estimate: 480 + 290 ≈ 770
2 596 + 347
Regroup Ones & Tens
Th H T O
5
9
6
3
4
7
Check: Does your answer make sense? Estimate: 600 + 350 ≈ 950
3 384 + 469
Regroup Ones & Tens
Th H T O
3
8
4
4
6
9
Check: Does your answer make sense? Estimate: 380 + 470 ≈ 850
4 657 + 288
Regroup Ones & Tens
Th H T O
6
5
7
2
8
8
Check: Does your answer make sense? Estimate: 660 + 290 ≈ 950
Grid Math Practice • Addition Mastery Keep digits aligned vertically in place-value columns
GRID MATH MASTERY
3-Digit Subtraction with Regrouping
Name:
Date:
Score: / 4
Directions: Regroup (borrow) across places as needed. Write new values in the top dashed boxes. Page 2 of 9
1 724 - 386
Regroup Tens & Ones
H T O
7
2
4
-
3
8
6
Check: Difference + Subtrahend = Minuend
2 852 - 479
Regroup Tens & Ones
H T O
8
5
2
-
4
7
9
Check: Difference + Subtrahend = Minuend
3 613 - 275
Regroup Tens & Ones
H T O
6
1
3
-
2
7
5
Check: Difference + Subtrahend = Minuend
4 905 - 468
Regroup Across Zero
H T O
9
0
5
-
4
6
8
Check: Difference + Subtrahend = Minuend
Grid Math Practice • Subtraction Mastery Remember: You cannot borrow from zero until you regroup the hundreds!
GRID MATH MASTERY
2-Digit by 1-Digit Multiplication
Name:
Date:
Score: / 4
Directions: Multiply ones, carry to the tens box, then multiply tens and add the carried amount. Page 3 of 9
1 47 × 6
Multiply & Regroup
Th H T O
4
7
×
6
Tip: (7 × 6 = 42) → Write 2, carry 4. Then (4 × 6 = 24) + 4 = 28.
2 68 × 4
Multiply & Regroup
Th H T O
6
8
×
4
Tip: (8 × 4 = 32) → Write 2, carry 3. Then (6 × 4 = 24) + 3 = 27.
3 85 × 7
Multiply & Regroup
Th H T O
8
5
×
7
Tip: (5 × 7 = 35) → Write 5, carry 3. Then (8 × 7 = 56) + 3 = 59.
4 79 × 8
Multiply & Regroup
Th H T O
7
9
×
8
Tip: (9 × 8 = 72) → Write 2, carry 7. Then (7 × 8 = 56) + 7 = 63.
Grid Math Practice • Multiplication Foundations Always multiply ones first, then tens, adding any carried amount
GRID MATH MASTERY
3-Digit by 1-Digit Multiplication
Name:
Date:
Score: / 4
Directions: Multiply each place value (ones, tens, hundreds). Regroup and add carries accurately. Page 4 of 9
1 364 × 5
2 Regroupings
Th H T O
3
6
4
×
5
Check: 4×5=20 (carry 2), 6×5+2=32 (carry 3), 3×5+3=18
2 528 × 6
2 Regroupings
Th H T O
5
2
8
×
6
Check: 8×6=48 (carry 4), 2×6+4=16 (carry 1), 5×6+1=31
3 479 × 4
2 Regroupings
Th H T O
4
7
9
×
4
Check: 9×4=36 (carry 3), 7×4+3=31 (carry 3), 4×4+3=19
4 683 × 7
2 Regroupings
Th H T O
6
8
3
×
7
Check: 3×7=21 (carry 2), 8×7+2=58 (carry 5), 6×7+5=47
Grid Math Practice • Multi-Digit Multiplication Keep carried digits small and clear so you remember to add them!
GRID MATH MASTERY
2-Digit by 2-Digit Multiplication
Name:
Date:
Score: / 4
Directions: Find both partial products (remember the placeholder zero in the tens row!), then add. Page 5 of 9
1 43 × 26
Partial Products
Th H T O
4
3
×
2
6
×6
+20
0
Total
Steps: 43 × 6 = 258 | 43 × 20 = 860 | 258 + 860 = ?
2 57 × 34
Partial Products
Th H T O
5
7
×
3
4
×4
+30
0
Total
Steps: 57 × 4 = 228 | 57 × 30 = 1,710 | 228 + 1,710 = ?
3 68 × 45
Partial Products
Th H T O
6
8
×
4
5
×5
+40
0
Total
Steps: 68 × 5 = 340 | 68 × 40 = 2,720 | 340 + 2,720 = ?
4 84 × 39
Partial Products
Th H T O
8
4
×
3
9
×9
+30
0
Total
Steps: 84 × 9 = 756 | 84 × 30 = 2,520 | 756 + 2,520 = ?
Grid Math Practice • Double-Digit Multiplication Don't forget: The placeholder 0 is required because multiplying by tens!
GRID MATH MASTERY
4-Digit Addition with Decimals (Tens to Hundredths)
Name:
Date:
Score: / 4
Directions: Keep the decimal points strictly aligned in their column. Regroup across place values. Page 6 of 9
1 47.85 + 26.58
Align Decimals
T O . t h
4
7
.
8
5
2
6
.
5
8
.
Check: Bring down the decimal point straight into the answer row!
2 63.79 + 18.64
Align Decimals
T O . t h
6
3
.
7
9
1
8
.
6
4
.
Check: Bring down the decimal point straight into the answer row!
3 54.96 + 37.45
Align Decimals
T O . t h
5
4
.
9
6
3
7
.
4
5
.
Check: Bring down the decimal point straight into the answer row!
4 78.67 + 45.89
Sum Exceeds 100
H T O . t h
7
8
.
6
7
4
5
.
8
9
.
Check: Bring down the decimal point straight into the answer row!
Grid Math Practice • Decimal Place Value Mastery Line up the decimal point before adding: tenths with tenths, hundredths with hundredths
GRID MATH MASTERY
4-Digit Subtraction with Decimals (Tens to Hundredths)
Name:
Date:
Score: / 4
Directions: Regroup across decimal places carefully. Keep decimal points lined up. Page 7 of 9
1 82.34 - 36.78
Regroup Across Decimals
T O . t h
8
2
.
3
4
-
3
6
.
7
8
.
Check: Difference + Subtrahend = Minuend
2 71.25 - 28.69
Regroup Across Decimals
T O . t h
7
1
.
2
5
-
2
8
.
6
9
.
Check: Difference + Subtrahend = Minuend
3 90.42 - 47.85
Regroup Across Decimals
T O . t h
9
0
.
4
2
-
4
7
.
8
5
.
Check: Difference + Subtrahend = Minuend
4 64.13 - 39.57
Regroup Across Decimals
T O . t h
6
4
.
1
3
-
3
9
.
5
7
.
Check: Difference + Subtrahend = Minuend
Grid Math Practice • Decimal Place Value Mastery Subtract from right to left: hundredths, tenths, ones, tens
GRID MATH MASTERY
2-Digit by 1-Digit Long Division
Name:
Date:
Score: / 4
Directions: Follow long division steps: Divide → Multiply → Subtract → Bring Down. Align digits in grid cells. Page 8 of 9
1 78 ÷ 3
D • M • S • B
3
7
8
Steps:
Divide
Multiply
Subtract
Bring down
Repeat
Check: Quotient × Divisor + Remainder = Dividend
2 92 ÷ 4
D • M • S • B
4
9
2
Steps:
Divide
Multiply
Subtract
Bring down
Repeat
Check: Quotient × Divisor + Remainder = Dividend
3 85 ÷ 5
D • M • S • B
5
8
5
Steps:
Divide
Multiply
Subtract
Bring down
Repeat
Check: Quotient × Divisor + Remainder = Dividend
4 96 ÷ 6
D • M • S • B
6
9
6
Steps:
Divide
Multiply
Subtract
Bring down
Repeat
Check: Quotient × Divisor + Remainder = Dividend
Grid Math Practice • Long Division Foundations Align each quotient digit directly above the digit you are dividing
GRID MATH MASTERY
3-Digit by 1-Digit Long Division
Name:
Date:
Score: / 4
Directions: Divide hundreds, tens, then ones. Use the grid columns to keep all subtract and bring-down steps aligned. Page 9 of 9
1 534 ÷ 6
3-Digit Dividend
6
5
3
4
Reminder:
6 does not go into 5, so start quotient in tens place!
Check: Quotient × Divisor = 534
2 748 ÷ 4
3-Digit Dividend
4
7
4
8
Steps:
1. Divide 7÷4
2. Mult & Sub
3. Bring down 4
4. Repeat for 8
Check: Quotient × Divisor = 748
3 651 ÷ 3
3-Digit Dividend
3
6
5
1
Steps:
1. Divide 6÷3
2. Mult & Sub
3. Bring down 5
4. Repeat for 1
Check: Quotient × Divisor = 651
4 845 ÷ 5
3-Digit Dividend
5
8
4
5
Steps:
1. Divide 8÷5
2. Mult & Sub
3. Bring down 4
4. Repeat for 5
Check: Quotient × Divisor = 845
Grid Math Practice • Multi-Digit Long Division Work step-by-step: Divide, Multiply, Subtract, Bring Down, Repeat
