1.
Find the result mentally using compensation.
877 − 299
A.
668
B.
1,176
C.
578
D.
576
Hint
2.
Find the result mentally.
12.4 − 7.1
A.
19.5
B.
4.3
C.
5.5
D.
5.3
Hint
3.
Find the result mentally.
57 + 68
A.
125
B.
9
C.
1,115
D.
115
Hint
4.
Find the result mentally.
45.2 − 3.5
A.
42.7
B.
48.7
C.
42.3
D.
41.7
Hint
5.
Find the result mentally.
840 − 547
A.
293
B.
393
C.
1,387
D.
3,007
Hint