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
23 + 20 = ______
43 + 10 = ______
49 − 10 = ______
27 + 20 = ______
46 + 10 = ______
4 × 10 = ______
76 + 20 = ______
2 × 10 = ______
9 × 10 = ______
37 + 20 = ______
80 − 10 = ______
56 + 10 = ______
55 − 10 = ______
1 × 10 = ______
65 − 10 = ______
97 − 10 = ______
68 − 10 = ______
74 − 10 = ______
89 + 20 = ______
86 + 20 = ______
