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087_G4U26_G4U26˙—» ¿º 2011.3.23 5:42 PM ˘ ` 101 PDF_In 2540DPI 150LPI T
2 . Complete each equation that results in 100.
a. 1 and 2, and 8 and 9 are put together to make 2-digit numbers.
Complete the equation.
12 (3 4 5 6 7) 89 100
b. 1, 2, and 3 are put together to make 123 that is close to 100.
Complete the equation.
123 (4 5 6 7 8 9) 100
c. Use only , , and parentheses to complete the equation.
1 2 3 4 5 6 7 8 9 100
Making 100
There are numerous ways to make 100 by inserting operation symbols in
between the numbers from 1 to 9.
1 2 3 45 67 8 9 100 1 2 3 4 5 6 7 8 9 100
1 2 3 4 5 6 7 89 100 1 2 3 4 5 67 8 9 100
1 2 3 4 5 6 78 9 100 1 2 3 4 5 6 7 8 9 100
1 2 3 4 56 7 8 9 100 1 2 3 4 56 7 89 100
1 2 34 5 6 7 8 9 100 1 2 3 4 5 6 7 89 100
26. Four Fours 101
2 . Complete each equation that results in 100.
a. 1 and 2, and 8 and 9 are put together to make 2-digit numbers.
Complete the equation.
12 (3 4 5 6 7) 89 100
b. 1, 2, and 3 are put together to make 123 that is close to 100.
Complete the equation.
123 (4 5 6 7 8 9) 100
c. Use only , , and parentheses to complete the equation.
1 2 3 4 5 6 7 8 9 100
Making 100
There are numerous ways to make 100 by inserting operation symbols in
between the numbers from 1 to 9.
1 2 3 45 67 8 9 100 1 2 3 4 5 6 7 8 9 100
1 2 3 4 5 6 7 89 100 1 2 3 4 5 67 8 9 100
1 2 3 4 5 6 78 9 100 1 2 3 4 5 6 7 8 9 100
1 2 3 4 56 7 8 9 100 1 2 3 4 56 7 89 100
1 2 34 5 6 7 8 9 100 1 2 3 4 5 6 7 89 100
26. Four Fours 101
