addition/subtraction

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1.
1 point
2+ 3+ 5+ 10+ 5=
2.
1 point
300- 250 =
3.
1 point
249 + 582 =
4.
1 point
904-301 =
5.
1 point
49 = 23+____
6.
1 point
24 = ____+ 12
7.
1 point
$5 - $2.50=
8.
1 point
4,355 +_____= 5,382
9.
1 point
2+ 5+___+2=10
10.
1 point
100- 42=