Singapore Math Level 3A & 3B – Unit 2: ADDING NUMBERS UP TO 10,000 - 42 Questions
Unit 2: ADDING NUMBERS UP TO 10,000
The questions and solutions are published here by using exact and equivalent words or sentences, the content of which is Unit 2: ADDING NUMBERS UP TO 10,000 of Singapore Math Level 3A. So let's solve it-
Q(1-5): Find the sum of the following numbers.
1. 1,386 and 2,001
2. 5,210 and 4,689
3. 4,037 and 2,232
4. 6,512 and 3,076
5. 4,378 and 1,521
Solution(1-5):
1. 1,386 + 2,001 = 3,387
+2001
----------
3387
2. 5,210 + 4,689 = 9,899
+ 4689
-----------
9899
3. 4,037 + 2,232 = 6269
+ 2232
------------
6269
4. 6,512 and 3,076 = 9,588
+ 3076
------------
9588
5. 4,378 + 1,521 = 5,899
+ 1521
------------
5899
Q(6-10): Find the sum as per the question structure, add one/s, ten/s, hundred/s or thousand/s if needed. [Here, we have start solution step after the question line and its a equivalent question]
6. 4 hundreds 7 tens + 7 hundreds 2 tens
= (4+7) hundreds (7+2) tens
= 11 hundreds 9 tens
= 1 thousand 1 hundred 9 tens
7. 5 hundreds 9 tens 3 ones + 6 hundreds 4 tens 2 ones
= (5 + 6) hundreds (9 + 4) tens (3 + 2) ones
= 11 hundreds 13 tens 5 ones
= 1 thousand 2 hundreds 3 tens 5 ones
8. 7 hundreds 6 tens 9 ones + 5 hundreds 2 tens 4 ones
= (7 + 5) hundreds (6 + 2) tens (9 + 4) ones
= 12 hundreds 8 tens 13 ones
= 1 thousand 2 hundreds 9 tens 3 ones
9. 5 hundreds 3 tens 6 ones + 7 hundreds 7 tens 8 ones
= (5 + 7) hundreds (3 + 7) tens (6 + 8) ones
= 12 hundreds 10 tens 14 ones
= 1 thousand 3 hundreds 1 ten 4 ones
10. 9 hundreds 1 ten 5 ones + 8 hundreds 5 tens
= (9 + 8) hundreds (1 + 5) tens 5 ones
= 17 hundreds 6 tens 5 ones
= 1 thousand 7 hundreds 6 tens 5 ones
Q(11-13): Fill in each blank with the correct answer.
11. 2,790 + 5,637 = ___.
12. The sum of 4,078 and 3,659 is ____.
13. The sum of 8,316 and 1,473 is _____.
Solution(11-12):
11. 2,790 + 5,637 = 8,427.
+8427
------------
8427
12. The sum of 4,078 and 3,659 is 7737.
+3659
-----------
7737
13. The sum of 8,316 and 1,473 is 9789.
+1473
-----------
9789
Q(14-32): Add the following numbers. Show your work.
+ 6487
-------------
15. 8400
+ 1324
-------------
16. 3356
+4134
-------------
17. 4348
+ 1625
---------------
18. 7430
+ 1932
-------------
19. 2282
+ 5413
-------------
20. 4908
+ 1767
--------------
21. 6210
+ 1538
--------------
22. 9126
+ 142
--------------
23. 4813
+ 4135
----------------
24. 5410
+ 2385
---------------
25. 3869
+ 2435
-------------
26. 3863
+ 5576
------------
27. 5657
+ 3638
------------
28. 5375
+ 2917
------------
29. 6281
+ 1198
------------
30. 4633
+ 4060
--------------
31. 2282
+ 4060
-------------
32. 3632
+ 6261
--------------
Solution(14-32):
14. 1745
+ 6487
-------------
8232
15. 8400
+ 1324
-------------
9724
16. 3356
+4134
-------------
7490
17. 4348
+ 1625
---------------
5973
18. 7430
+ 1932
-------------
9362
19. 2282
+ 5413
-------------
7695
20. 4908
+ 1767
--------------
6675
21. 6210
+ 1538
--------------
7748
22. 9126
+ 142
--------------
9268
23. 4813
+ 4135
----------------
8948
24. 5410
+ 2385
---------------
7795
25. 3869
+ 2435
-------------
6304
26. 3863
+ 5576
------------
9439
27. 5657
+ 3638
------------
9295
28. 5375
+ 2917
------------
8292
29. 6281
+ 1198
------------
7479
30. 4633
+ 4060
--------------
7680
31. 2282
+ 4060
-------------
6342
32. 3632
+ 6261
--------------
9893
Q(33-37): Match each butterfly to the correct flower.
Solution(33-37):
Solve the following word problems. Show your work in the space below. [We have used equivalent questions here.]
38. Shop A sells 3,279 buckets of organic mature. Shop B sells 2,580 buckets of organic mature. How many buckets of organic mature do both shops sell altogether?
Solution(38):
3,279 + 2,580 = 5,859
+2580
-----------
5859
Both shops sell 5,859 buckets of organic mature.
39. Mrs. Ben spent $1,574 in December. She spent $3,100 in January. How much did she spend altogether?
Solution(39):
$1,574 + $3,100 = $4,674
+3100
-------------
4671
She spent $4,674 altogether.
40. William traveled 4,200 km in July. He traveled 1,935 km more in August. How far did he travel in August?
Solution(40):
4,200 + 1,935 = 6,135
+1935
----------------
6135
William travelled 6,135 km in August.
41. Tomás collects 4,164 stamps. Sam collects 2,659 stamps more than Tomás. How many stamps does Sam collect?
Solution(41):
4,164 + 2,659 = 6,823
+2 6 5 9
------------
6 8 2 3
Tomás collects 6,823 stamps.
42. Jerry sold 2,347 pencils in January. She sold 3,169 pencils in February. How many pencils did she sell in the 2 months?
Solution(42):
2,347 + 3,169 = 5,516
+3 1 6 9
------------------
5 5 1 6
She sold 5,516 pencils in two months.
Also: