Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
1 × 10 = ______
59 − 10 = ______
75 + 20 = ______
75 − 10 = ______
96 − 10 = ______
28 + 20 = ______
5 × 10 = ______
93 − 10 = ______
12 + 20 = ______
83 + 10 = ______
51 + 10 = ______
87 − 10 = ______
12 + 10 = ______
24 + 10 = ______
57 + 20 = ______
46 + 10 = ______
70 + 20 = ______
99 − 10 = ______
78 + 20 = ______
34 + 20 = ______
