−
5
8
1
3
6
5
8 592 − 267 Ans: 325
—
8
12
H
T
O
5
9
2
−
2
6
7
3
2
5
9 718 − 394 Ans: 324
6
11
—
H
T
O
7
1
8
−
3
9
4
3
2
4
10 853 − 419 Ans: 434
—
4
13
H
T
O
8
5
3
−
4
1
9
4
3
4
Key 1 of 4 • Skill: Borrowing Once (10 Problems)
Triple Digit Subtraction Mastery
Teacher Key Worksheet 2 • Double Borrowing Solutions
Total: 10 Pts
Skills verified: Double regrouping across both Tens and Hundreds Regrouping boxes completed
11 534 − 268 Ans: 266
4
12
14
H
T
O
5
3
4
−
2
6
8
2
6
6
12 742 − 385 Ans: 357
6
13
12
H
T
O
7
4
2
−
3
8
5
3
5
7
13 615 − 279 Ans: 336
5
10
15
H
T
O
6
1
5
−
2
7
9
3
3
6
14 823 − 457 Ans: 366
7
11
13
H
T
O
8
2
3
−
4
5
7
3
6
6
15 951 − 684 Ans: 267
8
14
11
H
T
O
9
5
1
−
6
8
4
2
6
7
16 643 − 287 Ans: 356
5
13
13
H
T
O
6
4
3
−
2
8
7
3
5
6
17 725 − 368 Ans: 357
6
11
15
H
T
O
7
2
5
−
3
6
8
3
5
7
18 832 − 475 Ans: 357
7
12
12
H
T
O
8
3
2
−
4
7
5
3
5
7
19 514 − 178 Ans: 336
4
10
14
H
T
O
5
1
4
−
1
7
8
3
3
6
20 936 − 589 Ans: 347
8
12
16
H
T
O
9
3
6
−
5
8
9
3
4
7
Key 2 of 4 • Skill: Double Regrouping (10 Problems)
Triple Digit Subtraction Mastery
Teacher Key Worksheet 3 • Across Zeros Solutions
Total: 10 Pts
Skills verified: Regrouping across zeros in Tens and Ones Regrouping boxes completed
21 604 − 238 Ans: 366
5
9
14
H
T
O
6
0
4
−
2
3
8
3
6
6
22 502 − 167 Ans: 335
4
9
12
H
T
O
5
0
2
−
1
6
7
3
3
5
23 700 − 345 Ans: 355
6
9
10
H
T
O
7
0
0
−
3
4
5
3
5
5
24 805 − 439 Ans: 366
7
9
15
H
T
O
8
0
5
−
4
3
9
3
6
6
25 900 − 564 Ans: 336
8
9
10
H
T
O
9
0
0
−
5
6
4
3
3
6
26 403 − 178 Ans: 225
3
9
13
H
T
O
4
0
3
−
1
7
8
2
2
5
27 600 − 247 Ans: 353
5
9
10
H
T
O
6
0
0
−
2
4
7
3
5
3
28 706 − 389 Ans: 317
6
9
16
H
T
O
7
0
6
−
3
8
9
3
1
7
29 800 − 452 Ans: 348
7
9
10
H
T
O
8
0
0
−
4
5
2
3
4
8
30 501 − 286 Ans: 215
4
9
11
H
T
O
5
0
1
−
2
8
6
2
1
5
Key 3 of 4 • Skill: Across Zeros (10 Problems)
Triple Digit Subtraction Mastery
Teacher Key Worksheet 4 • Mixed Review Solutions
Total: 10 Pts
Skills verified: Multi-skill mixed subtraction review Regrouping boxes completed
31 603 − 275 Ans: 328
5
9
13
H
T
O
6
0
3
−
2
7
5
3
2
8
32 841 − 396 Ans: 445
7
13
11
H
T
O
8
4
1
−
3
9
6
4
4
5
33 726 − 453 Ans: 273
6
12
—
H
T
O
7
2
6
−
4
5
3
2
7
3
34 500 − 264 Ans: 236
4
9
10
H
T
O
5
0
0
−
2
6
4
2
3
6
35 832 − 487 Ans: 345
7
12
12
H
T
O
8
3
2
−
4
8
7
3
4
5
36 954 − 318 Ans: 636
—
4
14
H
T
O
9
5
4
−
3
1
8
6
3
6
37 702 − 348 Ans: 354
6
9
12
H
T
O
7
0
2
−
3
4
8
3
5
4
38 614 − 259 Ans: 355
5
10
14
H
T
O
6
1
4
−
2
5
9
3
5
5
39 871 − 526 Ans: 345
—
6
11
H
T
O
8
7
1
−
5
2
6
3
4
5
40 900 − 437 Ans: 463
8
9
10
H
T
O
9
0
0
−
4
3
7
4
6
3
Key 4 of 4 • Skill: Mixed Subtraction Review (10 Problems)
Triple Digit Subtraction Mastery
