Multiply
33 X 20
660
25 X 45
1,125
42 X 32
1,344
4 X __ = 40,000
10,000
Estimate 263 X 32
By 10's: 260 X 30 = 7800
or
By 100's: 300 X 30 = 9,000
21 x ___ = 210,000
10,000
Brayan created a math practice sheet with 130 questions. If 48 people complete the sheet, how many questions were answered in total?
130 X 48 = 6,240 questions