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
40 + 20 = ______
85 + 10 = ______
82 − 10 = ______
20 + 10 = ______
3 × 10 = ______
50 + 20 = ______
13 + 20 = ______
35 + 10 = ______
43 + 20 = ______
29 − 10 = ______
61 + 10 = ______
34 − 10 = ______
70 − 10 = ______
8 × 10 = ______
1 × 10 = ______
61 + 20 = ______
95 − 10 = ______
4 × 10 = ______
53 − 10 = ______
38 + 10 = ______
