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
52 + 20 = ______
9 × 10 = ______
30 + 10 = ______
48 − 10 = ______
66 + 10 = ______
21 − 10 = ______
84 − 10 = ______
79 − 10 = ______
3 × 10 = ______
59 + 10 = ______
2 × 10 = ______
11 + 10 = ______
58 − 10 = ______
63 + 20 = ______
60 − 10 = ______
74 + 10 = ______
66 + 20 = ______
78 + 10 = ______
28 − 10 = ______
70 − 10 = ______
