Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 977149 = 900000 + _____ + 100 + 49
- 442154 = _____ + 40000 + 2000 + 100 + 50 + 4
- 171756 = 100000 + 70000 + _____ + 700 + 50 + 6
- 871581 = 800000 + 70000 + 1000 + _____ + 80 + 1
(a)
977149 = 900000 + _____ + 100 + 49
977149 = 900000 + _____ + 149
977149 - 900000 - 149 = 77000
(b)
442154 = _____ + 40000 + 2000 + 100 + 50 + 4
442154 = _____ + 42154
442154 - 42154 = 400000
(c)
171756 = 100000 + 70000 + _____ + 700 + 50 + 6
171756 = 170000 + _____ + 756
171756 - 170000 - 756 = 1000
(d)
871581 = 800000 + 70000 + 1000 + _____ + 80 + 1
871581 = 871000 + _____ + 81
871581 - 871000 - 81 = 500
Answer(s): 77000, 400000, 1000, 500