Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 742628 = 700000 + _____ + 600 + 28
- 642111 = _____ + 40000 + 2000 + 100 + 10 + 1
- 887245 = 800000 + 80000 + _____ + 200 + 40 + 5
- 824717 = 800000 + 20000 + 4000 + _____ + 10 + 7
(a)
742628 = 700000 + _____ + 600 + 28
742628 = 700000 + _____ + 628
742628 - 700000 - 628 = 42000
(b)
642111 = _____ + 40000 + 2000 + 100 + 10 + 1
642111 = _____ + 42111
642111 - 42111 = 600000
(c)
887245 = 800000 + 80000 + _____ + 200 + 40 + 5
887245 = 880000 + _____ + 245
887245 - 880000 - 245 = 7000
(d)
824717 = 800000 + 20000 + 4000 + _____ + 10 + 7
824717 = 824000 + _____ + 17
824717 - 824000 - 17 = 700
Answer(s): 42000, 600000, 7000, 700