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
49 − 10 = ______
38 + 20 = ______
57 − 10 = ______
73 + 20 = ______
7 × 10 = ______
45 + 20 = ______
37 + 20 = ______
34 + 20 = ______
2 × 10 = ______
79 − 10 = ______
81 + 20 = ______
99 − 10 = ______
86 + 10 = ______
53 − 10 = ______
30 + 10 = ______
3 × 10 = ______
66 + 10 = ______
88 + 20 = ______
30 − 10 = ______
61 + 20 = ______
