Sum Sparks Worksheet Sum Sparks
Single-Digit Addition • Sums Within 10
Name:
Date:
Score: ____ / 10
Directions: Add the two numbers together. Write your answer in the box below each line.
10 Problems
1
3
2
5
3
6
4
4
5
2
6
1
7
7
8
3
9
5
10
2
Tip: Start with the larger number and count up to find the sum!
Fact Practice • Level 1
Sum Sparks Answer Key Sum Sparks
Answer Key
Single-Digit Addition • Sums Within 10
Standard: CCSS 1.OA.C.6
Total Points: 10 Pts
Rapid Grading: Correct sums are shown in bold emerald below each problem.
1 pt each
1
3
5
2
5
9
3
6
7
4
4
8
5
2
9
6
1
6
7
7
10
8
3
7
9
5
10
10
2
8
Quick Key: 1: 5 • 2: 9 • 3: 7 • 4: 8 • 5: 9 • 6: 6 • 7: 10 • 8: 7 • 9: 10 • 10: 8
Teacher Reference Sheet
Difference Drops Worksheet Difference Drops
Single-Digit Subtraction • Facts Within 10
Name:
Date:
Score: ____ / 10
Directions: Subtract the bottom number from the top number. Write your answer in the box.
10 Problems
1
8
− 3
2
9
− 4
3
7
− 2
4
6
− 5
5
9
− 6
6
5
− 2
7
8
− 4
8
7
− 3
9
6
− 2
10
9
− 5
Tip: Think of addition to check your work: what plus the bottom number equals the top?
Fact Practice • Level 1
Difference Drops Answer Key Difference Drops
Answer Key
Single-Digit Subtraction • Facts Within 10
Standard: CCSS 1.OA.C.6
Total Points: 10 Pts
Rapid Grading: Correct differences are shown in bold teal below each problem.
1 pt each
1
8
− 3
5
2
9
− 4
5
3
7
− 2
5
4
6
− 5
1
5
9
− 6
3
6
5
− 2
3
7
8
− 4
4
8
7
− 3
4
9
6
− 2
4
10
9
− 5
4
Quick Key: 1: 5 • 2: 5 • 3: 5 • 4: 1 • 5: 3 • 6: 3 • 7: 4 • 8: 4 • 9: 4 • 10: 4
Teacher Reference Sheet
Double Dash Addition Worksheet Double Dash
2-Digit Addition • With & Without Regrouping
Name:
Date:
Score: ____ / 10
Directions: Add the ones first, then add the tens. Regroup when the sum of the ones is 10 or greater.
10 Problems
1
24
2
45
3
36
4
58
5
62
6
47
7
71
8
29
9
53
10
68
Regrouping Check: Remember to write the carried ten above the tens column!
Fact Practice • Level 2
Double Dash Addition Answer Key Double Dash
Answer Key
2-Digit Addition • With & Without Regrouping
Standard: CCSS 2.NBT.B.5
Total Points: 10 Pts
Rapid Grading: Correct sums are shown in bold emerald below each problem.
1 pt each
1
24
37
2
45
68
3
36
63
4
58
77
5
62
96
6
47
85
7
71
87
8
29
83
9
53
95
10
68
93
Quick Key: 1: 37 • 2: 68 • 3: 63 • 4: 77 • 5: 96 • 6: 85 • 7: 87 • 8: 83 • 9: 95 • 10: 93
Teacher Reference Sheet
Double Drop Subtraction Worksheet Double Drop
2-Digit Subtraction • With & Without Regrouping
Name:
Date:
Score: ____ / 10
Directions: Subtract the ones column first, then the tens column. Regroup (borrow) a ten if needed.
10 Problems
1
67
− 24
2
89
− 35
3
74
− 28
4
92
− 47
5
58
− 31
6
83
− 39
7
95
− 42
8
61
− 25
9
76
− 34
10
84
− 56
Regrouping Tip: If the top ones digit is smaller than the bottom, borrow 1 ten (worth 10 ones)!
Fact Practice • Level 2
Double Drop Subtraction Answer Key Double Drop
Answer Key
2-Digit Subtraction • With & Without Regrouping
Standard: CCSS 2.NBT.B.5
Total Points: 10 Pts
Rapid Grading: Correct differences are shown in bold teal below each problem.
1 pt each
1
67
− 24
43
2
89
− 35
54
3
74
− 28
46
4
92
− 47
45
5
58
− 31
27
6
83
− 39
44
7
95
− 42
53
8
61
− 25
36
9
76
− 34
42
10
84
− 56
28
Quick Key: 1: 43 • 2: 54 • 3: 46 • 4: 45 • 5: 27 • 6: 44 • 7: 53 • 8: 36 • 9: 42 • 10: 28
Teacher Reference Sheet
Century Surge Addition Worksheet Century Surge
3-Digit Addition • Place Value Fluency
Name:
Date:
Score: ____ / 10
Directions: Add right to left: ones, tens, then hundreds. Regroup whenever a place column totals 10 or more.
10 Problems
1
324
2
542
3
438
4
375
5
614
6
468
7
726
8
549
9
631
10
385
Place Value Tip: Keep hundreds, tens, and ones in neat straight columns to avoid adding the wrong digits!
Fact Practice • Level 3
Century Surge Addition Answer Key Century Surge
Answer Key
3-Digit Addition • Place Value Fluency
Standard: CCSS 2.NBT.B.7 / 3.NBT.A.2
Total Points: 10 Pts
Rapid Grading: Correct sums are shown in bold emerald below each problem.
1 pt each
1
324
467
2
542
777
3
438
685
4
375
857
5
614
867
6
468
825
7
726
878
8
549
833
9
631
879
10
385
864
Quick Key: 1: 467 • 2: 777 • 3: 685 • 4: 857 • 5: 867 • 6: 825 • 7: 878 • 8: 833 • 9: 879 • 10: 864
Teacher Reference Sheet
Century Slash Subtraction Worksheet Century Slash
3-Digit Subtraction • Place Value Fluency
Name:
Date:
Score: ____ / 10
Directions: Subtract right to left: ones, tens, then hundreds. Regroup across place values where necessary.
10 Problems
1
768
− 324
2
895
− 461
3
652
− 238
4
745
− 382
5
589
− 243
6
824
− 457
7
976
− 532
8
643
− 279
9
784
− 351
10
915
− 468
Multi-Step Regrouping: Cross out and rewrite the borrowed place value numbers carefully above each column!
Fact Practice • Level 3
Century Slash Subtraction Answer Key Century Slash
Answer Key
3-Digit Subtraction • Place Value Fluency
Standard: CCSS 2.NBT.B.7 / 3.NBT.A.2
Total Points: 10 Pts
Rapid Grading: Correct differences are shown in bold teal below each problem.
1 pt each
1
768
− 324
444
2
895
− 461
434
3
652
− 238
414
4
745
− 382
363
5
589
− 243
346
6
824
− 457
367
7
976
− 532
444
8
643
− 279
364
9
784
− 351
433
10
915
− 468
447
Quick Key: 1: 444 • 2: 434 • 3: 414 • 4: 363 • 5: 346 • 6: 367 • 7: 444 • 8: 364 • 9: 433 • 10: 447
Teacher Reference Sheet
