Adding 2 numbers
10 + 20 =
30
67 - 5 =
62
456
+300 =
756
576
-200
376
How many tens are there in 6780
8
43 + 16 =
59
89 - 23 =
66
344
+222
566
789
-543
264
How many thousands are there in 4678
4
12 + 30 =
42
70 - 30 =
40
450
+211
661
750
-650
100
How many hundreds are there in 567
5
45 + 12 =
67
65 - 30 =
35
320
+560
780
567
-234
333
How many ones are there in 48
8
70 + 45 =
115
12 - 6 =
6
823
+140
963
890
-780
110
How many thousands in 7650
7