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
84 + 20 = ______
90 − 10 = ______
74 + 10 = ______
52 − 10 = ______
46 + 20 = ______
1 × 10 = ______
71 + 20 = ______
3 × 10 = ______
87 − 10 = ______
80 + 20 = ______
21 + 10 = ______
51 − 10 = ______
53 − 10 = ______
62 + 10 = ______
59 + 20 = ______
25 + 20 = ______
97 − 10 = ______
6 × 10 = ______
14 + 20 = ______
92 − 10 = ______
