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
86 + 20 = ______
80 − 10 = ______
2 × 10 = ______
32 + 20 = ______
20 + 10 = ______
68 + 10 = ______
1 × 10 = ______
50 + 10 = ______
67 − 10 = ______
74 − 10 = ______
51 − 10 = ______
8 × 10 = ______
3 × 10 = ______
46 + 10 = ______
69 − 10 = ______
24 + 10 = ______
48 + 10 = ______
50 − 10 = ______
53 + 20 = ______
37 + 20 = ______
