multiplication
100 x 400 =
500
160- 150 =
10
500+ 300=
800
6123
round to the thousand
6,000
25]5=
5
200 x 400
800
4560- 6560
2000
2019 + 2018 =
4037
4123
round thousand
4,000
100]5
20
1000 x 4000
5000000
7890 - 8890=
1000
6790+ 4567=
11357
8759
round to the thousand
9000
7000]2
3500
6340 x 3421
21689140
333972- 556313 =
222341
123456 + 1234567=
1358023
5,000,000
round to the million
5,000,000
33,972]3 =
113234