1.
Tell which equation represents a way to find the product of 5 × 29.
A.
5 × (29 + 1)
B.
5 × (5 + 29)
C.
5 × (30 + 1)
D.
5 × (30 − 1)
Hint
2.
Tell which equation represents a way to find the product of 2 × 27.
A.
2 × (30 − 3)
B.
2 × (30 + 3)
C.
2 × (2 + 27)
D.
2 × (27 + 3)
Hint
3.
Tell which equation represents a way to find the product of 8 × 23.
A.
8 × (8 + 23)
B.
8 × (20 + 3)
C.
8 × (20 − 3)
D.
8 × (23 − 3)
Hint
4.
Tell which multiplication problem can be written as 7 × (40 − 2).
A.
28 − 14
B.
7 × 38
C.
5 × 40
D.
7 × 42
Hint
5.
Find the product of 5 × 87 using mental math.
A.
407
B.
587
C.
435
D.
402
Hint