Find the missing digit. 445 + __ = 766
Consider the following example 5 + __ = 6 => 5+1=6
So similarly
445 + 321 = 766.
Find the missing digit. 349 + 4_6 = 805
Consider the unit digit in both numbers on LHS so 9 + 6 = 15 ; Hence 5 comes in the unit digit and 1 is carried over. Consider the tens digit in both numbers on LHS. Now since 0 is the tens digit in 805 the sun of tens digits on numbers on LHS should add up to 10 (1 gets carried over). So 1 + 4 +? = 10 = >? = 5
Consider the hundreds digit in both numbers on LHS. 1 + 3 + 4 = 8
349 + 456 = 805.
Find the missing number. 456 : 487 :: 360 : ?
456 + 31 = 487 360 + 31 = 391 So ? = 391
7000: 8000 :: 4000 : _?_
7000 + 1000 = 8000 4000 + 1000 = 5000
Find the missing number. 450, 460, ___, 480, 490, ___
Add 10 to each term to get the next term. 460 + 10 = 470 470 + 10 = 480 480 + 10 = 490 490 + 10 = 500
Find the missing number. 344, 351, 358, ___, ___.
Add 7 to each term to get the next term. 344 + 7 = 351 351+7=358 358 + 7 =365 365+ 7 = 372
Which number makes the equation true? ? +1323 = 1223 + 1223
1123 + 1323 = 2446 = 1223 + 1223
Which number makes the equation true? 419 +? = 581 + 116
419+278 = 581+116 = 697
Which number makes the equation true? 1508 + 1125 = 2407 +?
1508 + 1125 = 2407 + 226 = 2633
Which number makes the equation true? 43 + ? = 26 + 68
43 + 51 = 26 + 68 = 94
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