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(1) Complete the number sequence, write the missing numbers.

1200, 1300, 1400, _______, _______, _______, _______

4400, 4500, _______, _______, _______, _______, _______

8400, 8300, _______, _______, _______, _______, _______

(2) Multiply the multiples of 100 by 10.

900 • 10 = _______ 700 • 10 = _______ 500 • 10 = _______

400 • 10 = _______ 700 • 10 = _______ 600 • 10 = _______

(3) Compare the multiples of 1000 and write the sign <, > or =.

9000 7000 8000 nine thousand

9 • 1000 2000 three thousand 3000

(4) Write the multiples of 1000 up to 10000 in words.

1000 = thousand 2000 = _______

4000 = _______ 5000 = _______

10000 = _______ 8000 = _______

(5) Add the necessary number to the smaller number to get the equality.

(6) Write the missing numbers.

1686, 1687, _______, _______, _______, _______, _______, _______

2100, 2110, _______, _______, _______, _______, _______, _______

(7) Fill in the table.