In 4th grade math practice 7 the questions are related to fourth grade numbers activities. The questions are based on numbers like forming largest and smallest numbers, expanded form of a number, standard form of a number, predecessor and successor of a number, comparing numbers, estimating the sum and the difference, common factors, multiples, finding the product and quotient and arranging the fractions in ascending and descending order.
1. Write the largest and smallest numbers formed by using the digits only once.
9, 7, 0, 8.
Now write the number names of these numbers.
2. (a) Write in expanded form:
(i) 17056
(ii) 245698
(b) Write in standard form:
(i) 900000 + 9000 + 9
(ii) 10000 + 7000 + 20 + 8
3. (a) Write the predecessor and successor of:
(i) 175000
(ii) 99000
(b) Compare using >, <, =
(i) 42358 ____ 42385
(ii) 34870 ____ 34790 + 80
4. (a) Estimate the sum to the nearest hundred. Find the actual sum also.
298 + 897
(b) Estimate the difference to the nearest thousand and find the actual difference.
6828 - 2989
5. Find the product:
(a) 297 × 1000
(b) 7254 × 97
6. (a) Find the quotient:
(i) 25608 ÷ 1000
(ii) 3978 ÷ 100
(b) Estimate and verify the quotient:
777 ÷ 18
7. Use the symbols >, =, <
(a) 27 ____ XX
(b) XI ____ IX
(c) 29 ____ XXIX
(d) XIX ____ XXI
8. Complete the following:
(i) 40 is a multiple of _______ _______ _______ _______.
(ii) The sum of the first three multiples of 9 is _________________.
9. Find the common factors of 50 and 20.
10. (a) Write the fractions in ascending order :
³/₇, ³/₁₁, ³/₈, ³/₁₃
(b) Write the fractions in descending order:
¹/₇, ¹/₈, ¹/₃, ¹/₄
Answers for the 4th grade math practice 7 are given below to check the exact answers of the above questions on numbers.
1. 7089 – Seven thousand eighty nine
9870 – Nine thousand eight hundred and seventy.
2. (a) (i) 17056 = 10000 + 7000 + 50 + 6
(ii) 245698 = 200000 + 40000 + 5000 + 600 + 90 + 8
(b) (i) 909009
(ii) 17028
3. (a) (i) 174999, 175000, 175001
(ii) 98999, 99000, 99001
(b) (i) 42358 < 42385
(ii) 34870 = 34790 + 80
4. (a) estimate: 1200; sum: 1195
(b) estimate: 4000; sum: 3839
5. (a) 297000
(b) 703638
6. (a) (i) quotient: 25; remainder: 608
(ii) quotient: 39; remainder: 78
(b) estimate: 40; quotient: 43; remainder: 13
7. (a) 27 > XX
(b) XI > IX
(c) 29 = XXIX
(d) XIX < XXI
8. (i) 2, 4, 5, 10
(ii) 54
9. 2, 5, 10
10. (a) ³/₁₃, ³/₁₁, ³/₈, ³/₇
(b) ¹/₃, ¹/₄, ¹/₇, ¹/₈
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