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
85 + 20 = ______
47 + 20 = ______
2 × 10 = ______
47 + 10 = ______
98 − 10 = ______
74 − 10 = ______
80 + 20 = ______
9 × 10 = ______
78 + 10 = ______
3 × 10 = ______
24 + 10 = ______
32 − 10 = ______
52 + 20 = ______
23 + 20 = ______
94 − 10 = ______
70 − 10 = ______
46 + 20 = ______
89 + 20 = ______
48 + 10 = ______
40 + 10 = ______
