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
50 − 10 = ______
98 − 10 = ______
50 + 20 = ______
39 − 10 = ______
8 × 10 = ______
68 + 20 = ______
85 − 10 = ______
22 + 20 = ______
50 + 10 = ______
40 + 20 = ______
67 − 10 = ______
81 + 20 = ______
2 × 10 = ______
14 + 20 = ______
38 + 20 = ______
61 + 10 = ______
54 − 10 = ______
83 + 10 = ______
9 × 10 = ______
1 × 10 = ______
