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
3 × 10 = ______
17 + 10 = ______
14 + 20 = ______
9 × 10 = ______
61 + 20 = ______
4 × 10 = ______
5 × 10 = ______
60 − 10 = ______
32 + 20 = ______
46 − 10 = ______
50 + 20 = ______
52 − 10 = ______
24 − 10 = ______
2 × 10 = ______
56 + 10 = ______
33 − 10 = ______
49 − 10 = ______
48 + 20 = ______
20 + 20 = ______
7 × 10 = ______
