Singapore Math Level 3A & 3B – Review 1: Numbers and Adding Numbers up to 10000 - 20 Questions
Review 1: Numbers and Adding Numbers up to 10000
Q(1-2): Write the following numbers as words.
1. 1915
2. 6306
Solution(1-2):
1. one thousand, nine hundred fifteen
2. six thousand, three hundred six
Q(3-4): Write the following words as numbers.
3. three thousand, twelve
4. eight thousand, two hundred twenty-eight
Solution(3-4):
3. 3012
4. 8228
Q(5-8): Add the following numbers and Show your work.
Solution(5-8):
Q(9-10): Find the smaller number in each pair.
9. 4879 → 4798
10. 1050 → 1500
Solution(9-10):
9. Let's compare the same place digits of 4879 and 4798.
1st, 4=4
2nd, 8>7
So, 4879>4798
Ans: 4798
10. Let's compare the same place digits of 4879 and 4798.
1st, 1=1
2nd, 0<5
So, 1050<1500
Ans: 1050
Q(11-12): Find the largest number in each set.
11. 3711 → 3177 → 3717
12. 6023 → 6203 → 6032
Solution(11-12):
11. Let's compare the same place digits of 3711, 3177 and 3717.
1st, 3=3=3
2nd, 7>1<7; 7=7
Now, compare the same place digits of 3711 and 3717.
1st, 3=3
2nd, 7=7
3rd, 1=1
4th, 1<7
So, 3711 < 3717
Ans: 3717
12. Let's compare the same place digits of 6023, 6203 and 6032.
1st, 6=6=6
2nd, 0<2>0;
So, 6203 is the largest number.
Q(13-14): Complete the number patterns.
13. 4614, 4624, ____, ____, 4654
14. 7899, _____, 7937, 7956, ______
Solution(13-14):
13. Here, 4624 – 4614 = 10,
So, the pattern will be:
4614, 4624, (4624+10), (424+10+10), 4654
= 4614, 4624, 4634, 4644, 4654
14. Here, 7956 – 7937 = 19,
So, the pattern will be:
7899, (7899+19), 7937, 7956, (7956+19)
= 7899, 7918, 7937, 7956, 7975
Q15. Arrange the following numbers in order. Begin with the smallest.
15. 4860, 6048, 4680, 6840
Solution(15):
4680, 4860, 6048, 6840
Q16. In 2036,
(a) the digit __ is in the thousands place.
(b) the value of the digit 6 is ___.
(c) the digit 0 is in the………..place.
(d) the value of the digit ____ is 30.
Solution(16):
(a) 2
(b) 6
(c) hundreds
(d) 3
Q17. The sum of 7096 and 1845 is ____.
Solution(17):
7096+1845=8941;
Q18. 4 hundreds 3 tens 4 ones + 9 hundreds 1 ten 5 ones
= ___hundreds____tens___ones
= ____thousand____hundreds____tens___ones.
Solution(18):
4 hundreds 3 tens 4 ones + 9 hundreds 1 ten 5 ones
= (4+9) hundreds (3+1) tens (4+5) ones
= 13 hundreds 4 tens 9 ones
= 1 thousand 3 hundreds 4 tens 9 ones.
Q(19-20): Solve the following word problems. Show your work in the space below.
19. Mandy saved $4,312 in February. She saved $688 more in March than in February. How much did she save in March?
Solution(19):
$4,312 + $688 = $5,000
She saved $5000 in March.
20. Kwame pays $1,375 for a diamond bracelet. She pays $1,999 more for a diamond necklace. How much does Kwame pay for the diamond necklace?
Solution(20):
$1375 + $1999 = $3374
+1 9 9 9
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3 3 7 4
Kwame pays $3374 for the diamond necklace.
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