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

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 = ___

Explanation:
56 – 10 = 46
46 + 2 = 48
So, 56 – 8 = 48

Subtract mentally.

Question 2.
84 – 7 = ____

Explanation:
84 – 10 = 74
74 + 3 = 77
So, 84 – 7 = 77

Question 3.
38 – 9 = ___

Explanation:
39 – 10 = 28
28 + 1 = 9
So, 38 – 9 = 29

Question 4.
62 – 8 = ____

Explanation:
62 – 10= 52
52 + 2 = 54
So, 62 – 8 = 54

Question 5.
76 – 7 = ____

Explanation:
76 – 10 = 66
66 + 3 = 69
So, 62 – 8 = 69

Find the missing numbers. Subtract mentally.

Example
789 – 5 = ?

Question 6.
398 – 4 = ___

Explanation:
8 – 4 = 4
390 + 4 = 394
So, 398 – 4 = 394

Question 7.
427 – 2 = ___

Explanation:
7 – 2 = 5
420 + 5 = 425
So, 427 – 2 = 425

Question 8.
358 – 6 =___

Explanation:
8 – 6 = 2
350 + 2 = 352
So, 358 – 6 = 352

Find the missing numbers.
Subtract mentally.

Example

Question 9.
472 – 3 = ___

Explanation:
472 – 10 = 462
462 + 7 =469
so,472 – 3 = 469

Question 10.
513 – 9 = ___

Explanation:
513 – 10 = 503
503 + 1 = 504
so,513 – 9 = 504

Question 11.
394 – 7 = ___

Explanation:
394 – 10 = 384
384 + 3 = 387
so, 384 – 7 = 387

Find the missing numbers.
Subtract mentally.

Example

Question 12.
475 – 40 = ___

Explanation:
70 – 40 = 30
405 + 30 = 435
so, 475 – 40 = 435

Question 13.
466 – 30 = ___

Explanation:
60 – 30 = 30
406 + 30 = 436
so, 466 – 30 = 436

Question 14.
654 – 50 = ____

Explanation:
50 – 50 = 0
604 + 0 = 604
so, 654 – 50 = 604

Find the missing numbers.
Subtract mentally.

Example

Question 15.
516 – 70 = ___

Explanation:
516 – 100 = 416
416 + 30 = 446
so, 516 – 70 = 446

Question 16.
228 – 30 = ___

Explanation:
228 – 100 = 128
128 + 70 = 198
so, 228 – 30 = 198

Question 17.
436 – 40 = ___

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 = ___

Explanation:
800 – 400 = 400
32 + 400  = 432
so, 832 – 400 = 432

Find the missing numbers. Subtract mentally.

Question 19.
348 – 300 = ___

Explanation:
300 – 300 = 0
48 + 0 = 48
so, 348 – 300 = 48

Question 20.
548 – 300 = ___

Explanation:
500 – 300 = 200
48 + 200 = 248
so, 548 – 300 = 248

Question 21.
615 – 400 = ____

Explanation:
600 – 400 = 200
15 + 200 = 215
so, 615 – 400 = = 215

Question 22.
465 – 200 = ____