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
39 − 10 = ______
39 + 20 = ______
38 + 10 = ______
1 × 10 = ______
29 − 10 = ______
20 + 20 = ______
14 + 20 = ______
84 − 10 = ______
45 − 10 = ______
37 − 10 = ______
80 − 10 = ______
33 − 10 = ______
19 + 10 = ______
50 + 20 = ______
23 + 20 = ______
9 × 10 = ______
56 − 10 = ______
3 × 10 = ______
82 + 20 = ______
76 + 10 = ______
