1.   Tell which equation is an estimate for 7 × $16.38.
    A. 7 + $16 = $23 B. 10 × $20 = $200
    C. 5 × $10 = $50 D. 7 × $16 = $112
    Hint

  2.   Tell which equation is an estimate for 6 × $7.89.
    A. 5 × $5 = $25 B. 6 × $8 = $48
    C. 6 + $8 = $14 D. 10 × $10 = $100
    Hint

  3.   Tell which equation is an estimate for 56.2 × 6.
    A. 50 × 10 = 500 B. 56 × 6 = 336
    C. 50 × 6 = 300 D. 56 + 6 = 62
    Hint

  4.   Tell which equation is an estimate for 31.8 × 8.
    A. 30 × 5 = 150 B. 32 + 8 = 40
    C. 40 × 10 = 400 D. 32 × 8 = 256
    Hint

  5.   Tell which equation is an estimate for 8 × 49.6.
    A. 5 × 40 = 200 B. 8 × 50 = 400
    C. 80 × 50 = 4,000 D. 8 + 50 = 58
    Hint