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
42 + 10 = ______
57 + 20 = ______
30 + 20 = ______
66 + 10 = ______
4 × 10 = ______
83 − 10 = ______
3 × 10 = ______
8 × 10 = ______
23 + 10 = ______
86 + 20 = ______
21 − 10 = ______
29 − 10 = ______
98 − 10 = ______
9 × 10 = ______
2 × 10 = ______
57 + 10 = ______
1 × 10 = ______
48 + 20 = ______
5 × 10 = ______
15 + 10 = ______
