1) 1000000 : 1000 − 999; 1000000 : 1000 + 1; 420000 − 20000; 28000 : 4 * 100. 2) 800 − 139 * 4 + 244; 234 * 3 : 9; 1000 − 678.

4 классМатематика

1)
1000000 : 1000999;
1000000 : 1000 + 1;
42000020000;
28000 : 4 * 100.
2)
800139 * 4 + 244;
234 * 3 : 9;
1000678.

StaticConfig

1) 1000000 : 1000 − 999; 1000000 : 1000 + 1; 420000 − 20000; 28000 : 4 * 100. 2) 800 − 139 * 4 + 244; 234 * 3 : 9; 1000 − 678.

Решение 1

1000000 : 1000999 = 1000999 = 1;
1000000 : 1000 + 1 = 1000 + 1 = 1001;
42000020000 = 400000;
28000 : 4 * 100 = 7000 * 100 = 700000.

Решение 2

800139 * 4 + 244 = 800556 + 244 = 244 + 244 = 488;
 
$\snippet{name: column_multiplication, x: 139, y: 4}$
 
$\snippet{name: op_column, sign: '-', x: 800, y: 556, z: 244}$
 
$\snippet{name: op_column, sign: '+', x: 244, y: 244, z: 488}$
 
234 * 3 : 9 = 702 : 9 = 78;
$\snippet{name: column_multiplication, x: 234, y: 3}$
 
$\snippet{name: long_division, x: 709, y: 9}$
 
1000678 = 322.
 
$\snippet{name: op_column, sign: '-', x: 1000, y: 678, z: 322}$