Worksheet Solutions: Numbers - 1 | Mental Maths - Class 1 PDF Download

Q1: Fill in the blanks:
(i) January is the month of the year, December is the ____________ month of the year.
Ans: January is the month of the year, December is the last month of the year.

(ii) Monday is the 2nd day of the week, Friday is the ____________ day of the week.
Ans: Monday is the 2nd day of the week, Friday is the 6th day of the week.

(iii) The greatest number of 1 digit is ____________.
Ans: The greatest number of 1 digit is 9.

(iv) The smallest number of two digits is _________________ and three digits is ____________.
Ans: The smallest number of two digits is 10 and three digits is 100.

(v) The greatest number of three digits is ____________ and the smallest number of four digits is ____________.
Ans: The greatest number of three digits is 999 and the smallest number of four digits is 1000.

Q2: Write in words:
(i) 205
Ans: Two hundred five

(ii) 347
Ans: Three hundred forty seven

(iii) 459
Ans: Four hundred fifty nine

(iv) 968
Ans: Nine hundred sixty eight

(v) 601
Ans: Six hundred one

(vi) 108
Ans: One hundred eight

(vii) 563
Ans: Five hundred sixty three

(viii) 736
Ans: Seven hundred thirty six

(ix) 74
Ans: Seventy four

(x) 872
Ans: Eight hundred seventy two

Q3: Write in numerals:
(i) Nine hundred and thirty nine
Ans: 939

(ii) Seven hundred and seven
Ans: 707

(iii) Five hundred and sixty five
Ans: 565

(iv) Three hundred and seventy three
Ans: 373

(v) One hundred and nineteen
Ans: 119

(vi) Two hundred and eighty six
Ans: 286

(vii) Four hundred and twenty nine
Ans: 429

(viii) Six hundred and twenty
Ans: 620

(ix) Seventy seven
Ans: 77

(x) Eight hundred and fifty nine
Ans: 859

Q4: Write the numbers that come after the following numbers:
(i) 500
Ans: 501

(ii) 701
Ans: 702

(iii) 999
Ans: 1000

(iv) 432
Ans: 433

(v) 123
Ans: 124

(vi) 456
Ans: 457

(vii) 987
Ans: 988

(viii) 235
Ans: 236

(ix) 358
Ans: 359

(x) 644
Ans: 645

Q5: Write the numbers that come before the following numbers:
(i) 120
Ans: 119

(ii) 234
Ans: 233

(iii) 319
Ans: 318

(iv) 913
Ans: 912

(v) 80
Ans: 79

(vi) 478
Ans: 477

(vii) 535
Ans: 534

(viii) 637
Ans: 636

(ix) 766
Ans: 765

(x) 439
Ans: 438

Q6: Write the expended form of the following numbers:
(i) 639
Ans: 600 + 30 + 9

(ii) 507
Ans: 500 + 7

(iii) 460
Ans: 400 + 60

(iv) 215
Ans: 200 + 10 + 5

(v) 738
Ans: 700 + 30 +8

Q7: These are the expanded form of some numbers. Write numbers in short form:
(i) 900 + 90 + 7
Ans: 997

(ii) 600 + 0 + 5
Ans: 605

(iii) 100 + 50 + 6
Ans: 156

(iv) 400 + 40 + 4
Ans: 444

(v) 200 + 30 + 0
Ans: 230

(vi) 0 + 70 + 7
Ans: 77

(vii) 300 + 80 + 3
Ans: 383

(viii) 500 + 60 + 9
Ans: 569

Q8: Compete the sentence by writing the correct number in the blanks:
(i) 10 is 1 more then ______
Ans: 10 is 1 more then 9

(ii) ______ is one less than 99
Ans: 98 is one less than 99

(iii) 999 is one less than ______
Ans: 999 is one less than 1000

(iv) 371 is one more than ______
Ans: 371 is one more than 370

(v) ______ is one more then 375
Ans: 376 is one more then 375

Q9: Write > or =, < between the given numbers:
(i) 673 _______ 763
Ans: 673 < 763

(ii) 568 _______ 468
Ans: 568 > 468

(iii) 329 _______ 339
Ans: 329 < 339

(vi) 807 _______ 800
Ans: 807 > 800

(v) 455 _______ 555
Ans: 455 < 555

(vi) 729 _______ 839
Ans: 729 < 839

(vii) 946 _______ 649
Ans: 946 > 649

(viii) 371 _______ 473
Ans: 371 < 473

(ix) 567 _______ 476
Ans: 567 > 476

(x) 059 _______ 159
Ans: 059 < 159

Q10: Arrange the following number in ascending order:
(i) 391, 182, 25, 489, 431
Ans: 25, 182, 391, 431, 489

(ii) 527, 708, 107, 483, 96
Ans: 96, 107, 483, 527, 708

(iii) 379, 793, 973, 937, 739
Ans: 379, 739, 793, 937, 973

(iv) 318, 305, 372, 389, 343
Ans: 305, 318, 343, 372, 389

(v) 999, 499, 599, 799, 399
Ans: 399, 499, 599, 799, 999