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
24 + 20 = ______
55 + 10 = ______
58 − 10 = ______
78 + 10 = ______
3 × 10 = ______
89 + 20 = ______
28 + 20 = ______
58 + 20 = ______
45 − 10 = ______
85 − 10 = ______
5 × 10 = ______
51 − 10 = ______
50 + 20 = ______
12 + 10 = ______
9 × 10 = ______
61 + 10 = ______
72 + 10 = ______
2 × 10 = ______
54 + 10 = ______
52 − 10 = ______
