Practice the problems of Math in Focus Grade 2 Workbook Answer Key Chapter 10 Practice 4 Key Mental Subtraction to score better marks in the exam.

## Math in Focus Grade 2 Chapter 10 Practice 4 Answer Key Mental Subtraction

**Find the missing numbers. Subtract mentally.**

Example

43 – 6 = ?

Question 1.

56 – 8 = ?

56 – ___ = ____

____ + ___ = ____

So, 56 – 8 = ___

Answer:

Explanation:

56 – 10 = 46

46 + 2 = 48

So, 56 – 8 = 48

**Subtract mentally.**

Question 2.

84 – 7 = ____

Answer:

Explanation:

84 – 10 = 74

74 + 3 = 77

So, 84 – 7 = 77

Question 3.

38 – 9 = ___

Answer:

Explanation:

39 – 10 = 28

28 + 1 = 9

So, 38 – 9 = 29

Question 4.

62 – 8 = ____

Answer:

Explanation:

62 – 10= 52

52 + 2 = 54

So, 62 – 8 = 54

Question 5.

76 – 7 = ____

Answer:

Explanation:

76 – 10 = 66

66 + 3 = 69

So, 62 – 8 = 69

Find the missing numbers. Subtract mentally.

Example

789 – 5 = ?

Question 6.

398 – 4 = ___

Answer:

Explanation:

8 – 4 = 4

390 + 4 = 394

So, 398 – 4 = 394

Question 7.

427 – 2 = ___

Answer:

Explanation:

7 – 2 = 5

420 + 5 = 425

So, 427 – 2 = 425

Question 8.

358 – 6 =___

Answer:

Explanation:

8 – 6 = 2

350 + 2 = 352

So, 358 – 6 = 352

**Find the missing numbers.**

**Subtract mentally.**

Example

Question 9.

472 – 3 = ___

Answer:

Explanation:

472 – 10 = 462

462 + 7 =469

so,472 – 3 = 469

Question 10.

513 – 9 = ___

Answer:

Explanation:

513 – 10 = 503

503 + 1 = 504

so,513 – 9 = 504

Question 11.

394 – 7 = ___

Answer:

Explanation:

394 – 10 = 384

384 + 3 = 387

so, 384 – 7 = 387

**Find the missing numbers.**

**Subtract mentally.**

Example

Question 12.

475 – 40 = ___

Answer:

Explanation:

70 – 40 = 30

405 + 30 = 435

so, 475 – 40 = 435

Question 13.

466 – 30 = ___

Answer:

Explanation:

60 – 30 = 30

406 + 30 = 436

so, 466 – 30 = 436

Question 14.

654 – 50 = ____

Answer:

Explanation:

50 – 50 = 0

604 + 0 = 604

so, 654 – 50 = 604

**Find the missing numbers.**

**Subtract mentally.**

Example

Question 15.

516 – 70 = ___

Answer:

Explanation:

516 – 100 = 416

416 + 30 = 446

so, 516 – 70 = 446

Question 16.

228 – 30 = ___

Answer:

Explanation:

228 – 100 = 128

128 + 70 = 198

so, 228 – 30 = 198

Question 17.

436 – 40 = ___

Answer:

Explanation:

436 – 100 = 336

336 + 60 = 396

so, 436 – 40 = 396

**Find the missing numbers. Subtract mentally.**

Example

Explanation:

Question 18.

832 – 400 = ?

Explanation:

___ – 400 = ___

____ + ___ = ____

So, 832 – 400 = ___

Answer:

Explanation:

800 – 400 = 400

32 + 400 = 432

so, 832 – 400 = 432

**Find the missing numbers. Subtract mentally.**

Question 19.

348 – 300 = ___

Answer:

Explanation:

300 – 300 = 0

48 + 0 = 48

so, 348 – 300 = 48

Question 20.

548 – 300 = ___

Answer:

Explanation:

500 – 300 = 200

48 + 200 = 248

so, 548 – 300 = 248

Question 21.

615 – 400 = ____

Answer:

Explanation:

600 – 400 = 200

15 + 200 = 215

so, 615 – 400 = = 215

Question 22.

465 – 200 = ____

Answer:

Explanation:

400 – 200 = 200

65 + 200 = 265

so, 465 – 200 = = 265