subtraction
Round
100,000,000-9,858,937
90,000,000
add
1,259+521
1,780
multiply
192x13
2,469
Answer
225-97
128
add
2,415+666
3,081
multiply
23,346,441,345,335x4
93,385,765,381,340
Answer
125-101
24
add
2,414+8,298
10,712
multiply
1,234,567,890x12
14,814,814,680
Answer
51-13
38
add
528+319
847
multiply
1,029,283x23
23,673,509
Answer
750-385
365
add
29,394+12,345
41,739
multiply
9876543210x15
148,148,148,150