Subtract Mentally
Subtract mentally. Subtract 4 from:
58, 48, 38, 28
54, 44, 34, 24
Estimate to the nearest 10 then solve
94 - 68 =
90 - 70 = 20
99 - 36 =
63
78 - 3 + 20 =
95
Mac has 27 markers. He gives 7 markers to a friend. His mother gives him 38 markers. How many markers does Mac have now?
48 markers
Subtract mentally. Subtract 6 from:
60, 40, 30, 20
54, 34, 24, 14
Estimate to the nearest 10 then solve
88 - 39 =
90 - 40 = 50
68 - 39 =
29
27 - 4 + 30 =
53
Joan needs 45 shells for her project. She has 28 shells. How many more shells does she need?
17 more shells
Subtract mentally. Subtract 3 from:
95, 85, 75, 65
92, 82, 72, 65
Estimate to the nearest 10 then solve
75 - 33 =
80 - 30 = 50
84 - 67 =
17
34 + 7 - 12 =
29
There are 5 beads on each necklace. How many beads are on 6 necklaces?
30 beads
Subtract mentally. Subtract 12 from:
30, 40, 50, 60
18, 28, 38, 48
Estimate to the nearest 10 then solve
38 - 12 =
40 - 10 = 30
55 - 28 =
13 - 12 + 45 =
46
Walter makes 57 origami birds. Ten are penguins, 34 are swans, and the rest are owls. How many of the birds are owls?
13 birds are owls
Subtract mentally. Subtract 15 from:
70, 80, 90, 100
55, 65, 75, 85
Estimate to the nearest 10 then solve
101 - 81 =
100 - 80 = 20
91 - 46 =
45
56 + 32 - 27 =
61
Kendra has 33 pieces of red origami paper and 26 pieces of gold origami paper. How many more pieces of red paper than gold paper does she have?
7 more